Awkward thread title aside, chat in Chat is talking about headphones which reminded me I’ve wanted to ask for a while, or I may already have asked and forgotten:

Let’s say I am playing a piece of music through a set of noise cancelling headphones and simultaneously playing the same piece of music out loud on some speakers in the same room as me. What do I hear through the headphones?

• What do I hear through the headphones?

John Malkovich’s voice…

esselte said:

Awkward thread title aside, chat in Chat is talking about headphones which reminded me I’ve wanted to ask for a while, or I may already have asked and forgotten:

Let’s say I am playing a piece of music through a set of noise cancelling headphones and simultaneously playing the same piece of music out loud on some speakers in the same room as me. What do I hear through the headphones?

The music through the headphones is slightly altered due to the noise cancelling waveform, detecting this would be hard I imagine unless you had two sets of the same headphones connected one with it on and the other with it off.
I’ve found decent headphones sound a lot better any stereo I’ve played it through.

Or you may mean can you hear both pieces of the same music, that would depend on the volume of both I suppose.
I can’t hear anything with the headphone on and them playing, not sure if that includes some yelling or a nuke going off in the background.

esselte said:

Awkward thread title aside, chat in Chat is talking about headphones which reminded me I’ve wanted to ask for a while, or I may already have asked and forgotten:

Let’s say I am playing a piece of music through a set of noise cancelling headphones and simultaneously playing the same piece of music out loud on some speakers in the same room as me. What do I hear through the headphones?

just guessing, but if you think about the negative feedback in an amplifier, it has what’s known as damping, or a damper factor, you see it if you try to move the cone on a low frequency driver connected to an amplifier that’s turned on, it’ll resist you moving the cone.

you can manipulate that in headphones, to reject external noise.

esselte said:

Let’s say I am playing a piece of music through a set of noise cancelling headphones and simultaneously playing the same piece of music out loud on some speakers in the same room as me. What do I hear through the headphones?

Do you think this is likely to occur?

esselte said:

Awkward thread title aside, chat in Chat is talking about headphones which reminded me I’ve wanted to ask for a while, or I may already have asked and forgotten:

Let’s say I am playing a piece of music through a set of noise cancelling headphones and simultaneously playing the same piece of music out loud on some speakers in the same room as me. What do I hear through the headphones?

Physical experiment needed.

Noise-cancelling headphones

Some are better others. You need to test them before buying.

Theory

To cancel the lower-frequency portions of the noise, noise-cancelling headphones use active noise control. They incorporate a microphone that measures ambient sound, generate a waveform that is the exact negative of the ambient sound, and mix it with any audio signal the listener desires.

Most noise-cancelling headsets in the consumer market generate the noise-cancelling waveform in real-time with analogue technology. In contrast, other active noise and vibration control products use soft real-time digital processing.

To prevent higher-frequency noise from reaching the ear, most noise-cancelling headphones depend on soundproofing. Higher-frequency sound has a shorter wavelength, and cancelling this sound would require locating devices to detect and counteract it closer to the listener’s eardrum than is currently technically feasible or would require digital algorithms that would complicate the headphone’s electronics.

Noise-cancelling headphones specify the amount of noise they can cancel in terms of decibels. This number may be useful for comparing products but does not tell the whole story, as it does not specify noise reduction at various frequencies.

Circumaural headphones enclose the wearer’s ear completely. This is an example of passive noise isolation (soundproofing).

more…

Tau.Neutrino said:

Noise-cancelling headphones

Some are better others. You need to test them before buying.

Theory

To cancel the lower-frequency portions of the noise, noise-cancelling headphones use active noise control. They incorporate a microphone that measures ambient sound, generate a waveform that is the exact negative of the ambient sound, and mix it with any audio signal the listener desires.

Most noise-cancelling headsets in the consumer market generate the noise-cancelling waveform in real-time with analogue technology. In contrast, other active noise and vibration control products use soft real-time digital processing.

To prevent higher-frequency noise from reaching the ear, most noise-cancelling headphones depend on soundproofing. Higher-frequency sound has a shorter wavelength, and cancelling this sound would require locating devices to detect and counteract it closer to the listener’s eardrum than is currently technically feasible or would require digital algorithms that would complicate the headphone’s electronics.

Noise-cancelling headphones specify the amount of noise they can cancel in terms of decibels. This number may be useful for comparing products but does not tell the whole story, as it does not specify noise reduction at various frequencies.

Circumaural headphones enclose the wearer’s ear completely. This is an example of passive noise isolation (soundproofing).

more…

In reality, noise cancelling headphones are earmuffs with deafening speakers inside.

roughbarked said:

Tau.Neutrino said:

Noise-cancelling headphones

Some are better others. You need to test them before buying.

Theory

To cancel the lower-frequency portions of the noise, noise-cancelling headphones use active noise control. They incorporate a microphone that measures ambient sound, generate a waveform that is the exact negative of the ambient sound, and mix it with any audio signal the listener desires.

Most noise-cancelling headsets in the consumer market generate the noise-cancelling waveform in real-time with analogue technology. In contrast, other active noise and vibration control products use soft real-time digital processing.

To prevent higher-frequency noise from reaching the ear, most noise-cancelling headphones depend on soundproofing. Higher-frequency sound has a shorter wavelength, and cancelling this sound would require locating devices to detect and counteract it closer to the listener’s eardrum than is currently technically feasible or would require digital algorithms that would complicate the headphone’s electronics.

Noise-cancelling headphones specify the amount of noise they can cancel in terms of decibels. This number may be useful for comparing products but does not tell the whole story, as it does not specify noise reduction at various frequencies.

Circumaural headphones enclose the wearer’s ear completely. This is an example of passive noise isolation (soundproofing).

more…

In reality, noise cancelling headphones are earmuffs with deafening speakers inside.

well no they aren’t otherwise they wouldn’t be noise cancelling.

ChrispenEvan said:

roughbarked said:

Tau.Neutrino said:

Noise-cancelling headphones

Some are better others. You need to test them before buying.

Theory

To cancel the lower-frequency portions of the noise, noise-cancelling headphones use active noise control. They incorporate a microphone that measures ambient sound, generate a waveform that is the exact negative of the ambient sound, and mix it with any audio signal the listener desires.

Most noise-cancelling headsets in the consumer market generate the noise-cancelling waveform in real-time with analogue technology. In contrast, other active noise and vibration control products use soft real-time digital processing.

To prevent higher-frequency noise from reaching the ear, most noise-cancelling headphones depend on soundproofing. Higher-frequency sound has a shorter wavelength, and cancelling this sound would require locating devices to detect and counteract it closer to the listener’s eardrum than is currently technically feasible or would require digital algorithms that would complicate the headphone’s electronics.

Noise-cancelling headphones specify the amount of noise they can cancel in terms of decibels. This number may be useful for comparing products but does not tell the whole story, as it does not specify noise reduction at various frequencies.

Circumaural headphones enclose the wearer’s ear completely. This is an example of passive noise isolation (soundproofing).

more…

In reality, noise cancelling headphones are earmuffs with deafening speakers inside.

well no they aren’t otherwise they wouldn’t be noise cancelling.

I knew that would attract you. :) good eve, Boris.

Tech Radar reviewed 12 Noise cancelling headphones

Best noise-cancelling headphones 2019: the best headphones for travel and commuting

I use classic studio Sennheisers that are not noise-cancelling (I think), just well protected from leakage in and out.

Because they’re recording studio phones, I’m often playing music to accompany what’s coming through them. It’s impossible unless the instrument I’m playing is also going through the amplifier via mic or plug-in etc, as otherwise you simply can’t hear what you’re playing.