Passive noise cancelling headphones review Calumet

passive noise cancelling headphones review

Over Ear Active and Passive Noise Cancelling Headphones 31/10/2019 · You’ve probably heard of Bose QC 35 IIs—they’re benchmark active noise-cancelling headphones, and some of the best wireless headphones we’ve tested to date. So when Bose released the new 700s, I was eager to get them into our labs to see if they could live up to their predecessors.

Noise Cancelling Headphones The Good Guys

Headphones Wirecutter. The headphones pictured here are my current travel headphones, the Bowers & Wilkins P5s ($299). They employ passive noise canceling technology and while the fit is not ideal thanks to my small ears, they sound fantastic (when not in the air and pretty good when flying) and …, At the moment, the Cowin E7 is Amazon's top selling wireless, noise canceling headphone and has a four star rating with 3,800+ reviews. We headphone geeks might recognize the brand, but I very much doubt if the average person has ever heard of Cowin..

A Buyers Guide To The Best Noise-Cancelling Headphones for People In Creative Industries. There are two types of creative people in the world: those who get inspiration surrounding themselves with others and those who want to zone out when working. Best Cheap Noise-Canceling Headphones (Under $200), Ranked Best to Worst . By Charles A. Cohen 2019-12-04T18:30:54Z. The best noise-cancelling headphones under $200. …

13/01/2020 · As a bonus I will include a couple of headphones that filter out noise through the microphone and the noise through the earphones! Some of the headsets will have passive/active noise canceling earphones. Let us start with the noise canceling microphone only category. Note, all of these headsets come with a superb noise canceling microphone. All Noise-Cancelling Travel Headphones. Rediscover the joy of traveling. With headphones featuring NoiseGard®, Sennheiser’s proprietary active noise-cancelling technology, you can listen to your favorite music or audio books in peace, even in the noisiest of environments.

Passive noise-canceling headphones just won’t cut it in that case. Active. Certain headphones can actively cancel out ambient noise. Like passive headphones, their very structure creates a barrier against high-frequency sound waves. However, they also erase lower-frequency waves by creating their own sound waves that cancel out incoming noises. Passive VS Active Noise Canceling. Passive noise canceling headphones work to block external sound waves thanks to the material that they are designed with. They work similar to ear muffs, softening or dampening external noise. Active noise canceling headphones also make use of materials that are designed to cancel external noise.

15/01/2020 · Noise-Cancelling Headphones vs. Earphones. Early noise-cancelling headphones had to be big, over-ear cans to properly block out sound, but the technology has shrunk a … A Buyers Guide To The Best Noise-Cancelling Headphones for People In Creative Industries. There are two types of creative people in the world: those who get inspiration surrounding themselves with others and those who want to zone out when working.

At the moment, the Cowin E7 is Amazon's top selling wireless, noise canceling headphone and has a four star rating with 3,800+ reviews. We headphone geeks might recognize the brand, but I very much doubt if the average person has ever heard of Cowin. When buying noise-canceling headphones or earphones the biggest complaint I hear is that people still hear external noise. Yes, that is very much true, even the best noise cancelling earbuds will not be able to cancel out all external noise. The sound being canceled usually needs to be a constant tone or less spontaneous. The great thing about

Shop for noise cancelling headphones at Best Buy. Find low everyday prices and buy online for delivery or in-store pick-up We've reviewed the best travel noise canceling headphones for kids and added an easy-to-read comparison chart to help you choose what's best in 2020.

Sony WH-1000XM3 Wireless Noise Cancelling Headphone Introduction. Sony WH-1000XM3- Front View. Secrets has had a decent selection of some of the more current wireless active noise-canceling Bluetooth headphones in for review lately. We've reviewed the best travel noise canceling headphones for kids and added an easy-to-read comparison chart to help you choose what's best in 2020.

Active or passive - True noise-canceling headphones use active circuitry to analyze sounds in your vicinity and generate counter-signals to literally cancel them out. If you want the most isolated listening experience possible, you need active noise-cancelation. Passive noise-canceling just insulates you from the outside world with big earcups Buy products related to over ear active and passive noise cancelling headphone products and see what customers say about over ear active and passive noise cancelling headphone products on Amazon.com FREE DELIVERY possible on eligible purchases

Active or passive - True noise-canceling headphones use active circuitry to analyze sounds in your vicinity and generate counter-signals to literally cancel them out. If you want the most isolated listening experience possible, you need active noise-cancelation. Passive noise-canceling just insulates you from the outside world with big earcups 14/07/2014 · This Review of the 20 BEST Noise Cancelling Headphones is a must read for anyone looking to AVOID low-quality noise cancelling earbuds/headphones. "With most noise cancelling …

28/06/2017 · If you want to find out more details about the Cowin E-7 Noise Cancelling Wireless Bluetooth Headphones before buying it, read the review below.. The Basics. You know that I never spare my criticism and there must be a good reason why I recommend the E-7 as the best all-rounder headphones you can possibly find right now. The best wireless noise cancelling headphones we’ve tested so far are the Sony WH-1000XM3. With a few iterative improvements over their predecessors, the Sony WH-1000XM2 Wireless, Sony finally hit the jackpot and produced a pair of headphones that are crammed full of features, of which the active noise cancelling is the most impressive.

Best Cheap Noise-Canceling Headphones (Under $200), Ranked Best to Worst . By Charles A. Cohen 2019-12-04T18:30:54Z. The best noise-cancelling headphones under $200. … 31/10/2019 · You’ve probably heard of Bose QC 35 IIs—they’re benchmark active noise-cancelling headphones, and some of the best wireless headphones we’ve tested to date. So when Bose released the new 700s, I was eager to get them into our labs to see if they could live up to their predecessors.

Noise Cancelling Headphones The Good Guys

passive noise cancelling headphones review

Noise-Canceling Headphone Reviews InnerFidelity. Use any of these noise cancelling headphones and enjoy your music in peace. 15 Best Noise Cancelling Headphones Comparison Related: Want noise cancelling earbuds/in-ear monitors? Click here. Here you can find the alternative, best noise isolating headphones. What are the best noise cancelling headphones? Here you’re going to find the top models of over-ear and on-ear headphones that have …, Monster Inspiration headphones information: The review below is based on time spent with the active-noise-canceling version of Monster’s Inspiration headphones, which uses a noise-canceling.

noise cancelling headphones Best Buy

passive noise cancelling headphones review

Over Ear Active and Passive Noise Cancelling Headphones. Noise-cancelling headphones excel at negating deep, low, droning noises like a plane’s engine or car traffic, but struggle with higher-frequency noises like everyday chatter. Noise-isolating headphones must have a great fit in order to perform best, assuming they fit well, these headphones can drown out noises between 15-30 decibels, which actually isn’t that much . https://en.wikipedia.org/wiki/Talk%3ANoise-cancelling_headphones Last but not least, our reviews present you with the iTeknic Active Noise Cancelling Headphones. Featuring ANC technology, these headphones effectively minimize the noise caused by the city traffic, busy office or plane cabin. By so doing, they make it possible to enjoy music anywhere anytime. Best of all, the noise canceling technology of these headphones works well both in wired and wireless.

passive noise cancelling headphones review

  • The Best Noise-Cancelling Headphones for 2019 Travel
  • Noise-Canceling Headphone Reviews InnerFidelity
  • The 10 Best Noise-Canceling Headphones of 2020

  • A Buyers Guide To The Best Noise-Cancelling Headphones for People In Creative Industries. There are two types of creative people in the world: those who get inspiration surrounding themselves with others and those who want to zone out when working. If you need more sports-oriented noise cancelling in-ears, the best noise cancelling earbuds for working out are the Sony WI-SP600N. Their active noise cancelling (ANC) feature isn’t as strong as that of the Jabra Elite 65e Wireless, but they’re well-built and are rated IPX4 for light water resistance. They have a simple in-ear design that

    Shop for noise cancelling headphones at Best Buy. Find low everyday prices and buy online for delivery or in-store pick-up Waterproof Headphones, V4.2 HD Stereo Sound Sports Wireless in Ear Earbuds with Mic, Passive Noise Cancelling Headsets, 9 Hours Battery for Gym Running Workout Men, Women 4.8 out of …

    15/01/2020 · Noise-Cancelling Headphones vs. Earphones. Early noise-cancelling headphones had to be big, over-ear cans to properly block out sound, but the technology has shrunk a … Noise Cancelling Headphones Buy the best Noise Cancelling Headphones in Australia online and in store from The Good Guys. Choose from wireless noise cancelling, corded noise cancelling and even wireless noise cancelling earbuds, you will always get a good deal on Noise Cancelling Headphones from leading brands such as JBL , Beats , Sony and Audio Technica .

    14/07/2014 · This Review of the 20 BEST Noise Cancelling Headphones is a must read for anyone looking to AVOID low-quality noise cancelling earbuds/headphones. "With most noise cancelling … We've reviewed the best travel noise canceling headphones for kids and added an easy-to-read comparison chart to help you choose what's best in 2020.

    We've reviewed the best travel noise canceling headphones for kids and added an easy-to-read comparison chart to help you choose what's best in 2020. We've reviewed the best travel noise canceling headphones for kids and added an easy-to-read comparison chart to help you choose what's best in 2020.

    For passive noise cancelling headphones you can expect to pay anywhere from $20 to $50 for a model that offers good sound quality and is comfortable to wear. A set of active noise cancelling headphones for sleeping will cost a bit more. The best wireless noise cancelling headphones we’ve tested so far are the Sony WH-1000XM3. With a few iterative improvements over their predecessors, the Sony WH-1000XM2 Wireless, Sony finally hit the jackpot and produced a pair of headphones that are crammed full of features, of which the active noise cancelling is the most impressive.

    The first on-ear noise-cancelling headphones in the Beats lineup, the Solo Pros deliver fairly balanced audio, 22 hours of battery life and impressive noise cancelling that should put Bose on 15/01/2020 · Noise-Cancelling Headphones vs. Earphones. Early noise-cancelling headphones had to be big, over-ear cans to properly block out sound, but the technology has shrunk a …

    13/01/2020В В· As a bonus I will include a couple of headphones that filter out noise through the microphone and the noise through the earphones! Some of the headsets will have passive/active noise canceling earphones. Let us start with the noise canceling microphone only category. Note, all of these headsets come with a superb noise canceling microphone. All Last but not least, our reviews present you with the iTeknic Active Noise Cancelling Headphones. Featuring ANC technology, these headphones effectively minimize the noise caused by the city traffic, busy office or plane cabin. By so doing, they make it possible to enjoy music anywhere anytime. Best of all, the noise canceling technology of these headphones works well both in wired and wireless

    Noise-Cancelling Travel Headphones. Rediscover the joy of traveling. With headphones featuring NoiseGard®, Sennheiser’s proprietary active noise-cancelling technology, you can listen to your favorite music or audio books in peace, even in the noisiest of environments. Noise-cancelling headphones excel at negating deep, low, droning noises like a plane’s engine or car traffic, but struggle with higher-frequency noises like everyday chatter. Noise-isolating headphones must have a great fit in order to perform best, assuming they fit well, these headphones can drown out noises between 15-30 decibels, which actually isn’t that much .

    19/09/2013 · Noise cancelling versus noise isolating headphones. If you travel a lot, or are just a fan of a bit of quiet, you’ve been probably curious about the difference, and what is better. Passive noise cancellation accounts for 99% of the noise reduction the headphones produce on the market. This is because most headphones or headsets on the market only offer passive noise cancellation. In order to receive also active noise cancellation, the headphones must specifically be active noise-cancelling headphones. These headphones are

    passive noise cancelling headphones review

    19/09/2013 · Noise cancelling versus noise isolating headphones. If you travel a lot, or are just a fan of a bit of quiet, you’ve been probably curious about the difference, and what is better. 19/09/2013 · Noise cancelling versus noise isolating headphones. If you travel a lot, or are just a fan of a bit of quiet, you’ve been probably curious about the difference, and what is better.

    17.01.2020 · 3 Fleck 9100SXT Dual Tank Water Softener 48,000 Grain. This model is another top performance you can get from the Fleck brand. It is one of the best considering that it comes with an impressive water flow rate. Comparing to the other two models … Dual tank water softener reviews Wallbridge 17.01.2020 · 3 Fleck 9100SXT Dual Tank Water Softener 48,000 Grain. This model is another top performance you can get from the Fleck brand. It is one of the best considering that it comes with an impressive water flow rate. Comparing to the other two models …

    2020 Guide To The Best Travel Noise Canceling Headphones

    passive noise cancelling headphones review

    Best Noise-Cancelling Headphones for Creatives in 2020. Noise-Cancelling Travel Headphones. Rediscover the joy of traveling. With headphones featuring NoiseGard®, Sennheiser’s proprietary active noise-cancelling technology, you can listen to your favorite music or audio books in peace, even in the noisiest of environments., The headphones pictured here are my current travel headphones, the Bowers & Wilkins P5s ($299). They employ passive noise canceling technology and while the fit is not ideal thanks to my small ears, they sound fantastic (when not in the air and pretty good when flying) and ….

    Amazon.com Customer reviews Myth Labs Genesis Headphones

    Monster Inspiration (Active Noise Canceling) Review. 28/06/2017В В· If you want to find out more details about the Cowin E-7 Noise Cancelling Wireless Bluetooth Headphones before buying it, read the review below.. The Basics. You know that I never spare my criticism and there must be a good reason why I recommend the E-7 as the best all-rounder headphones you can possibly find right now., 13/01/2020В В· As a bonus I will include a couple of headphones that filter out noise through the microphone and the noise through the earphones! Some of the headsets will have passive/active noise canceling earphones. Let us start with the noise canceling microphone only category. Note, all of these headsets come with a superb noise canceling microphone. All.

    13/01/2020 · As a bonus I will include a couple of headphones that filter out noise through the microphone and the noise through the earphones! Some of the headsets will have passive/active noise canceling earphones. Let us start with the noise canceling microphone only category. Note, all of these headsets come with a superb noise canceling microphone. All The best wireless noise cancelling headphones we’ve tested so far are the Sony WH-1000XM3. With a few iterative improvements over their predecessors, the Sony WH-1000XM2 Wireless, Sony finally hit the jackpot and produced a pair of headphones that are crammed full of features, of which the active noise cancelling is the most impressive.

    24/03/2018В В· This is a review for Active Noise Cancelling Bluetooth Headphones, Hi-Fi Deep Bass Wireless over Ear Headphones with Microphone 40mm Large-aperture Driver 16H Playtime for Travel Work TV PC Iphone 28/06/2017В В· If you want to find out more details about the Cowin E-7 Noise Cancelling Wireless Bluetooth Headphones before buying it, read the review below.. The Basics. You know that I never spare my criticism and there must be a good reason why I recommend the E-7 as the best all-rounder headphones you can possibly find right now.

    We've researched and tested the best in-ear, on-ear, noise-cancelling, Bluetooth, and other headphones, so you don't have to. 14/07/2014 · This Review of the 20 BEST Noise Cancelling Headphones is a must read for anyone looking to AVOID low-quality noise cancelling earbuds/headphones. "With most noise cancelling …

    Use any of these noise cancelling headphones and enjoy your music in peace. 15 Best Noise Cancelling Headphones Comparison Related: Want noise cancelling earbuds/in-ear monitors? Click here. Here you can find the alternative, best noise isolating headphones. What are the best noise cancelling headphones? Here you’re going to find the top models of over-ear and on-ear headphones that have … Sony WH-1000XM3 Wireless Noise Cancelling Headphone Introduction. Sony WH-1000XM3- Front View. Secrets has had a decent selection of some of the more current wireless active noise-canceling Bluetooth headphones in for review lately.

    31/10/2019 · You’ve probably heard of Bose QC 35 IIs—they’re benchmark active noise-cancelling headphones, and some of the best wireless headphones we’ve tested to date. So when Bose released the new 700s, I was eager to get them into our labs to see if they could live up to their predecessors. Noise-cancelling headphones excel at negating deep, low, droning noises like a plane’s engine or car traffic, but struggle with higher-frequency noises like everyday chatter. Noise-isolating headphones must have a great fit in order to perform best, assuming they fit well, these headphones can drown out noises between 15-30 decibels, which actually isn’t that much .

    The headphones pictured here are my current travel headphones, the Bowers & Wilkins P5s ($299). They employ passive noise canceling technology and while the fit is not ideal thanks to my small ears, they sound fantastic (when not in the air and pretty good when flying) and … Passive noise cancellation accounts for 99% of the noise reduction the headphones produce on the market. This is because most headphones or headsets on the market only offer passive noise cancellation. In order to receive also active noise cancellation, the headphones must specifically be active noise-cancelling headphones. These headphones are

    We've researched and tested the best in-ear, on-ear, noise-cancelling, Bluetooth, and other headphones, so you don't have to. Noise-Cancelling Travel Headphones. Rediscover the joy of traveling. With headphones featuring NoiseGard®, Sennheiser’s proprietary active noise-cancelling technology, you can listen to your favorite music or audio books in peace, even in the noisiest of environments.

    If you need more sports-oriented noise cancelling in-ears, the best noise cancelling earbuds for working out are the Sony WI-SP600N. Their active noise cancelling (ANC) feature isn’t as strong as that of the Jabra Elite 65e Wireless, but they’re well-built and are rated IPX4 for light water resistance. They have a simple in-ear design that 24/03/2018 · This is a review for Active Noise Cancelling Bluetooth Headphones, Hi-Fi Deep Bass Wireless over Ear Headphones with Microphone 40mm Large-aperture Driver 16H Playtime for Travel Work TV PC Iphone

    03/03/2016В В· This AKG has an integrated rechargeable battery that offers a solid 30 hours of active noise canceling and -- if the battery runs out -- you can listen in passive mode without the headphone being 13/01/2020В В· As a bonus I will include a couple of headphones that filter out noise through the microphone and the noise through the earphones! Some of the headsets will have passive/active noise canceling earphones. Let us start with the noise canceling microphone only category. Note, all of these headsets come with a superb noise canceling microphone. All

    31/10/2019 · You’ve probably heard of Bose QC 35 IIs—they’re benchmark active noise-cancelling headphones, and some of the best wireless headphones we’ve tested to date. So when Bose released the new 700s, I was eager to get them into our labs to see if they could live up to their predecessors. Active or passive - True noise-canceling headphones use active circuitry to analyze sounds in your vicinity and generate counter-signals to literally cancel them out. If you want the most isolated listening experience possible, you need active noise-cancelation. Passive noise-canceling just insulates you from the outside world with big earcups

    noise cancelling headphones Best Buy

    passive noise cancelling headphones review

    Noise-Canceling Headphones for Travel Sennheiser. Noise-cancelling headphones excel at negating deep, low, droning noises like a plane’s engine or car traffic, but struggle with higher-frequency noises like everyday chatter. Noise-isolating headphones must have a great fit in order to perform best, assuming they fit well, these headphones can drown out noises between 15-30 decibels, which actually isn’t that much ., 19/09/2013 · Noise cancelling versus noise isolating headphones. If you travel a lot, or are just a fan of a bit of quiet, you’ve been probably curious about the difference, and what is better..

    The 10 Best Noise-Canceling Headphones of 2020. Passive noise-canceling headphones just won’t cut it in that case. Active. Certain headphones can actively cancel out ambient noise. Like passive headphones, their very structure creates a barrier against high-frequency sound waves. However, they also erase lower-frequency waves by creating their own sound waves that cancel out incoming noises., Shop for noise cancelling headphones at Best Buy. Find low everyday prices and buy online for delivery or in-store pick-up.

    2020 Guide To The Best Travel Noise Canceling Headphones

    passive noise cancelling headphones review

    The Best Noise-Cancelling Headphones for 2019 Travel. Active or passive - True noise-canceling headphones use active circuitry to analyze sounds in your vicinity and generate counter-signals to literally cancel them out. If you want the most isolated listening experience possible, you need active noise-cancelation. Passive noise-canceling just insulates you from the outside world with big earcups https://en.wikipedia.org/wiki/Talk%3ANoise-cancelling_headphones Passive noise cancellation accounts for 99% of the noise reduction the headphones produce on the market. This is because most headphones or headsets on the market only offer passive noise cancellation. In order to receive also active noise cancellation, the headphones must specifically be active noise-cancelling headphones. These headphones are.

    passive noise cancelling headphones review


    Noise-cancelling headphones excel at negating deep, low, droning noises like a plane’s engine or car traffic, but struggle with higher-frequency noises like everyday chatter. Noise-isolating headphones must have a great fit in order to perform best, assuming they fit well, these headphones can drown out noises between 15-30 decibels, which actually isn’t that much . For passive noise cancelling headphones you can expect to pay anywhere from $20 to $50 for a model that offers good sound quality and is comfortable to wear. A set of active noise cancelling headphones for sleeping will cost a bit more.

    The best wireless noise cancelling headphones we’ve tested so far are the Sony WH-1000XM3. With a few iterative improvements over their predecessors, the Sony WH-1000XM2 Wireless, Sony finally hit the jackpot and produced a pair of headphones that are crammed full of features, of which the active noise cancelling is the most impressive. 06/01/2020 · The Rs. 3,790 Claw ANC7 active noise cancelling earphones aren’t wireless, but do promise to reduce ambient noise. Here’s our review.

    Active or passive - True noise-canceling headphones use active circuitry to analyze sounds in your vicinity and generate counter-signals to literally cancel them out. If you want the most isolated listening experience possible, you need active noise-cancelation. Passive noise-canceling just insulates you from the outside world with big earcups 13/01/2020В В· As a bonus I will include a couple of headphones that filter out noise through the microphone and the noise through the earphones! Some of the headsets will have passive/active noise canceling earphones. Let us start with the noise canceling microphone only category. Note, all of these headsets come with a superb noise canceling microphone. All

    For passive noise cancelling headphones you can expect to pay anywhere from $20 to $50 for a model that offers good sound quality and is comfortable to wear. A set of active noise cancelling headphones for sleeping will cost a bit more. Buy products related to over ear active and passive noise cancelling headphone products and see what customers say about over ear active and passive noise cancelling headphone products on Amazon.com FREE DELIVERY possible on eligible purchases

    For passive noise cancelling headphones you can expect to pay anywhere from $20 to $50 for a model that offers good sound quality and is comfortable to wear. A set of active noise cancelling headphones for sleeping will cost a bit more. If you need more sports-oriented noise cancelling in-ears, the best noise cancelling earbuds for working out are the Sony WI-SP600N. Their active noise cancelling (ANC) feature isn’t as strong as that of the Jabra Elite 65e Wireless, but they’re well-built and are rated IPX4 for light water resistance. They have a simple in-ear design that

    Passive noise-canceling headphones just won’t cut it in that case. Active. Certain headphones can actively cancel out ambient noise. Like passive headphones, their very structure creates a barrier against high-frequency sound waves. However, they also erase lower-frequency waves by creating their own sound waves that cancel out incoming noises. Waterproof Headphones, V4.2 HD Stereo Sound Sports Wireless in Ear Earbuds with Mic, Passive Noise Cancelling Headsets, 9 Hours Battery for Gym Running Workout Men, Women 4.8 out of …

    Shop for noise cancelling headphones at Best Buy. Find low everyday prices and buy online for delivery or in-store pick-up We've reviewed the best travel noise canceling headphones for kids and added an easy-to-read comparison chart to help you choose what's best in 2020.

    15/01/2020 · Noise-Cancelling Headphones vs. Earphones. Early noise-cancelling headphones had to be big, over-ear cans to properly block out sound, but the technology has shrunk a … Monster Inspiration headphones information: The review below is based on time spent with the active-noise-canceling version of Monster’s Inspiration headphones, which uses a noise-canceling

    Noise Cancelling Headphones Buy the best Noise Cancelling Headphones in Australia online and in store from The Good Guys. Choose from wireless noise cancelling, corded noise cancelling and even wireless noise cancelling earbuds, you will always get a good deal on Noise Cancelling Headphones from leading brands such as JBL , Beats , Sony and Audio Technica . Best Cheap Noise-Canceling Headphones (Under $200), Ranked Best to Worst . By Charles A. Cohen 2019-12-04T18:30:54Z. The best noise-cancelling headphones under $200. …

    19/09/2013 · Noise cancelling versus noise isolating headphones. If you travel a lot, or are just a fan of a bit of quiet, you’ve been probably curious about the difference, and what is better. 28/06/2017 · If you want to find out more details about the Cowin E-7 Noise Cancelling Wireless Bluetooth Headphones before buying it, read the review below.. The Basics. You know that I never spare my criticism and there must be a good reason why I recommend the E-7 as the best all-rounder headphones you can possibly find right now.

    passive noise cancelling headphones review

    14/07/2014 · This Review of the 20 BEST Noise Cancelling Headphones is a must read for anyone looking to AVOID low-quality noise cancelling earbuds/headphones. "With most noise cancelling … Buy products related to over ear active and passive noise cancelling headphone products and see what customers say about over ear active and passive noise cancelling headphone products on Amazon.com FREE DELIVERY possible on eligible purchases