Questions tagged [digital-audio]
The digital-audio tag has no usage guidance.
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2answers
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I2S MCLK Generation
I'm working with a Sierra Wireless BC127 (Bluetooth Module) I2S master which is generating Left-Justified, 16 bps @ 44.1khz sample rate. The Bit clock is set to 2.822 Mhz.
I want to use a Cirrus ...
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1answer
30 views
SQNR and Dynamic Range
An audio tone \$Acos(\omega t + \theta)\$ undergoes uniform quantization by a quantizer that has the average quantization noise power \$q^2/6\$ joules, where \$q\$ is the quantization step size. If ...
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1answer
70 views
Translating/reverse engineering firmware commands
I'm trying to build my own Hi-Fi system. So, I recently ordered this Japanese DSP that's able to process Dolby audio. I was all excited until the part had arrived and I found something in the ...
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1answer
58 views
AUX input or microcontroller in a musical tesla coil?
Alright so I am making a musical tesla coil. I have seen some online tutorials and what I noticed is that some people are giving the audio input using a microcontroller and programming it to produce ...
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0answers
141 views
I2S DAC Volume Control
First of all, let me preface this with the fact that I'm not an EE -- I'm a hobbyist with some experience and a background in software development.
I'm trying to use a TI PCM5102A Audio DAC with a ...
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1answer
43 views
Impedance matching between CSR8675 and a MM20 microphone
I'm building my own (rugged) headphone. I am planning to use a MM20-33639-000 microphone with CSR8675 DSP. My question here relates to impedance matching.
Based on what I have read, most modern ...
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1answer
129 views
Understanding Audio Amplification with OpAmp
I have what I believe to be a fairly simple schematic, as shown below, to take either a PWM signal from an AVR board to play a song/alarm, or radio signal.
I'm connecting both of these with a ...
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1answer
200 views
How to interface to a PDM audio source?
I hear about this technology, I read about it, I even see a bunch of MEMS microphones with PDM output. I can perfectly understand how it works (I have worked with DSP). However, I can't seem to ...
