Questions tagged [digital-audio]

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CSR8645 3.2 bluetooth module audio output merge negative pins

I want to use this module with my car aux in which is has 3.5mm 3 pole jack. This module has separate negative pins as LN and RN. I need to merge and connect these pins to aux in common negative pin.
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39 views

Would an LM7805 need a heatsink stepping down two stacked LiR2032/CR2032 (3.6V X2) batteries?

Okay, I'm terrible at anything electronic, especially when it comes to building from boards (think rudimentary understanding). I've built a few PC's in my day, but piecemeal, not from scratch. Keep ...
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1answer
66 views

Is it relatively simple to design an ADC to ADAT interface with only a Toslink port?

For this project (I'm an experienced audio engineer but a relative beginner in electrical engineering) I really want to integrate a simple ADC to ADAT circuit in a patchbay I'm building so that I have ...
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1answer
133 views

How to interface a microphone to an I2S input to use HFP

For my group's SDP/Capstone we are doing a bluetooth headset of sorts. We are using a CYW20706 SoC from Cypress. Specifically, we are using a this CYBT-343026-01 Cypress module whch includes that ...
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1answer
253 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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0answers
27 views

Dependence of the PWM amplitude of the amplifier on the battery voltage

I'm going to use speaker connected to internal Class D amplifier in WM8998 in my PCB. Power source of my PCB is Li-Pol battery with 3.2-4.1V range or external 4V adapter. Audio codec speaker power ...
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57 views

Transmitting I2S over 6ft

I've been looking at audio ADCs with most rated at 192Ksps with 24 bit audio. Typically the output is in I2S, but I understand that the signal is not intended to go far. I understand that HDMI can ...
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25 views

How to set up SPIDF channel bits for high sample rate output?

The original SPIDF standard supported sampling rates only up to 48kHz, but today much higher sample rates are supported. The sample rate was set by controlling channel status bits, which also ...
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1answer
102 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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526 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 ...