Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [recording]

The tag has no usage guidance.

1
vote
2answers
60 views

Why can mobile microphones handle high noise now?

I'm wondering why mobile microphones can now record just fine in very noisy environments? (like loud rock concerts) when just a few years ago the sound would be cracking so terribly that you could ...
1
vote
1answer
342 views

Convert from line level to mic level, without worsening the sound quality

I have an audio signal coming out from an iPhone which I would like to record in iPad using its mic input. I have tried this with simple resistor divider (and TRS-TRRS connectors), but it seems to ...
1
vote
0answers
158 views

Dolby HX PRO implementation on existing tape recording deck

I'm experimenting the implementation of Dolby HX PRO's IC into an old stereo Fostex tape deck to improve high frequency and headroom capabilities. HX PRO works as a dynamic processor with the BIAS ...
2
votes
3answers
233 views

Attenuate 75W speaker to Line-In

I have a 75W amplifier with a 8ohm speaker connected. I need to record the audio from that output, so i was thinking in using a voltage-divider to condition the signal and record it through the Line-...
2
votes
2answers
606 views

problem solving: line level to iphone attenuator buzzing sound

I'm trying to use the mic input on my iPhone to record line level audio. I have made a cable with an attenuator as shown in the picture below. Recording from my macbook pro works like a charm (3,5mm ...
0
votes
1answer
120 views

Record phone call with another iPhone

I'm planning a DIY cable to output audio and input it to another iPhone for recording. The following combination safe and would that transfer audio? From iPhone's TRRS jack (phone call phone) ...
0
votes
4answers
291 views

Saving Oscilloscope Traces as Compressed Bitstream

I have been recording the output of a comparator by having its output (essentially a bit stream with 3.3V swing @ ~20 Mbps) terminating in an SMA connector, and connecting that to an oscilloscope (...
0
votes
1answer
79 views

Negative part of Line level audio waveform clamped

Im trying to record output from an old synth chip (YM3812). The output waveform is centered around 2.5V with peaks at approx. 2.5 +- 1.5V. I can easily connect a pc speaker with a TSSR cable to hear ...
2
votes
5answers
5k views

Does USB cable quality matters (affects in someway the signal) on audio interface (or DAC)?

I was wondering this for quite a while. Usb cables are purely digital signal so in theory no one should care about its quality if it does the job well and transfer the signal to the end (ones and ...
0
votes
2answers
178 views

Remote Playback Device [closed]

I am looking for a small device/system that I can pre record a one or two word message on and play it back with the push of a remote button. Ideally, the remote would have 3-5 buttons for different ...
0
votes
1answer
327 views

Record video from webcam w/o microcontroller [closed]

I managed to salvage a webcam from a broken laptop, and I'm looking to use it to record video in a small package to attach to a rocket. However, I need to record the video to some data medium like a ...
-2
votes
1answer
2k views

Pic microcontroller voice recording and playback [closed]

I was wondering we can easily interface LCD, led an pot etc but I couldn't find way how to record my different voice strings and playback specific string as per commands that given to pic
0
votes
2answers
131 views

A problem with line-in hum

I' trying to record guitar using line-in. But there's a noticeable noise in the recordings, and it is present even when guitar is unplugged (only cable is connected). As you can see its clearly mains ...
2
votes
1answer
87 views

Audio: Microphones and SPL

With a microphone sensitivity of -33dB = 22.4mV/Pa, picking up a conversation (about 60dB SPL), What is the voltage output of the microphone? My concern here is power vs voltage decibel calculations. ...
0
votes
3answers
3k views

How to reduce tape hiss while recording a cassette tape with digital data as source

I bought a few Maxell cassette tapes, a portable Sony cassette tapes recorder (with the possibility to record also from an external microphone: in my case, a jack connected to the PC) and - as already ...
4
votes
3answers
2k views

AC-bias in tape heads: could someone explain?

I understand that the purpose of AC-bias is to improve the quality of a tape recording by countering some otherwise adverse physical properties of practical magnetic materials. I've had this ...
6
votes
3answers
1k views

Video Home System (VHS) bandwidth

Standard play VHS video cassette recorders offered only about 3 MHz luminance bandwidth by recording the signal on an FM carrier. What is that carrier frequency? Is it possible to confirm the carrier ...
-1
votes
1answer
110 views

How to build a circuit that can record and playback our voice?

I want to build a simple circuit that can record and playback our voice. IC should be small in size and the circuit should never contain any SMD components. Can anybody given any suggestions to build ...