Questions tagged [audio-engineering]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1
vote
0answers
30 views

What's the best way to get an ultrasonic sensor that can vary its operating frequency

Long story short I'm looking to build an ultrasonic sensor that can also be used to communicate with a seperate sensor. (So it must be able to send out a pitch around ~42kHz, but also alter the pitch ...
0
votes
1answer
41 views

Using the bitrate value on a calculation is causing contradiction, why?

Do you have any idea on why the Calculation 1 below doesn't match? Reference: Audio buffers: frames, samples and channels ...
0
votes
2answers
154 views

Microspeaker enclosure design for headphones

I want to embark on an acoustic project of designing an enclosure for some 40mm microspeakers, identical to ones found in a typical on-ear headphone solution. Are microspeaker enclosures treated in ...
4
votes
1answer
263 views

Making my microcontroller transmit audio to any bluetooth headphones/speakers

I am creating a microcontroller on a custom PCB design for an MP3 player. I would like to consider integrating bluetooth into it. When I say integrating bluetooth into it, I specifically mean ...
1
vote
1answer
67 views

Adding an R2R Digital to analog converter inline with TRS connector

I am trying to create a simple R2R DAC, maybe 8-16 bits. I want to be able to that type of DAC inline to a headphone line. Since the an 8 bit R2R DAC will need 8 pins, how exactly do I wire up a TRS ...
0
votes
3answers
44 views

Microphone angled waterproofing

We are working on a mounted screen design that will have microphones at the bottom of the screen housing. The screen housing will be sitting at a 10.5 degree angle. So we are worried about water ...
1
vote
2answers
51 views

Could a magnetic audio tape recorder/player be made using a vibrating permanent magnet?

Cassette tape players use a read head where the magnetic field from the tape is directed through an induction coil. The induced current in the coil is then amplified and sent to the speakers. Now I'm ...
1
vote
1answer
159 views

Audio frequency sweep spectrogram artifacts… hints?

I'm wondering how to interpret artifacts on spectrograms like the following which shows the recording of a linear frequency sweep. In this case: The recording is done with a cheap microphone and ...
2
votes
1answer
49 views

Acoustic transmission through houseboat hulls

The short version is: should I be worried about bass transmission through water into my neighbors' hulls? I am renovating a small houseboat (12x30 ft) to live on. It is one large room, and I plan on ...
1
vote
2answers
83 views

How does electricity flow through this kind of vacuum tube?

Does the current flow from the bottom left pin to the bottom right pin, or from the bottom pins to the cap on top?
4
votes
1answer
106 views

What is that airplane headphone socket?

I recently flew on a A380 and I saw this interesting socket. Could someone explain to me what is the purpose of these 4 golden connections?
0
votes
2answers
106 views

Sound insulation, absorption and diffusion. Can they be part of the same process when wanting to both soundproof and acoustically treat a room?

I understand that insulation, absorption and diffusion in acoustics are different concepts. Notwithstanding, would it be correct to assume they may be part of the same process when all are used to ...
2
votes
2answers
284 views

Acoustical Design considerations for Active Noise Cancellation Project for Air vent [closed]

I am working on ''Active noise cancellation for air vent'' project. I am using NI myRIO1900 it has FPGA module(Xylinx Z-7010) , Audio Technica ATR 3350 omni directional microphones and Tevion ...
3
votes
2answers
506 views

What type of test signal is appropriate for frequency response analysis of string instruments?

I want to test the frequency response of stringed musical instruments . My test set-up includes a piezo film transducer which is just taped onto the instrument and fed a signal which then vibrates the ...
7
votes
3answers
3k views

Is there a mechanical equivalent to a hi/low pass filter (as in electrical engineering)?

I have been wondering if there are certain media (for instance glass, air, foam, etc.) which are peculiar given their chemical composition and/or structure allowing them to filter out mechanical waves ...
0
votes
2answers
1k views

Powering LED light using smartphone headset jack

Would it be possible to power a small LED light using the headset jack of a regular smartphone, and if so, how would you connect the LED light with an audio jack. How would such an implement look like....
4
votes
1answer
545 views

Is active noise cancellation useful in vehicles?

The cabin noise of vehicles is a large concern in the luxury market. Why haven't any automakers used the same techniques as are employed in active noise cancelling headphones. In these devices a ...