Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [audio-codec]

54 questions
6
votes
2 answers

Why is the latency so high for Bluetooth audio?

Referring to this, the lowest latencies achieved in Bluetooth audio streaming are around 30-40ms. Given the fact that Bluetooth physical layer data rate is of around 2-3 Mbps and today's Bluetooth chipsets support sufficiently high processing power,…
Ashutosh
  • 798
  • 1
  • 5
  • 15
5
votes
4 answers

Is there an efficient way for synchronising audio events real-time with LEDs using an MCU?

I'm working on a project in which LED lights synchronise with audio events. I'm not referring to reactive LED projects that read the ADC from audio amplitude or spectrum, but about having some additional digital data playing along with the audio to…
Chu
  • 361
  • 4
  • 15
4
votes
1 answer

Ultra low power audio recorder

I'm trying to design an ultra low power audio recorder, in order to monitor ground noise in rural areas. The circuit I'm working on is based on a microcontroller (STM32L100RC) and an audio codec (VS1053) plus a bunch of additional components. At…
PeppeA82
  • 43
  • 1
  • 4
2
votes
1 answer

Can the differential output signal of a DAC be AC coupled directly to the differential input pins of a class D audio amplifier?

The datasheet of the audio codec I'm using (CS4272-CZZ) suggest a filter on the differential output pins. Their suggested configuration also combines the signals into a single ended output. I want to amplify this signal using a TPA3116D2, which…
Bennaman
  • 21
  • 1
2
votes
1 answer

What ESP32 pins to connect to the NAU8810 audio codec?

What ESP32 pins to connect to an NAU8810 audio codec? Or rather the other way around. I need an RX pin. Would this be tied to DACIN? Pins I'm unsure about: MOUT (Mono Output) ADCOUT (Digital Audio Data Output) DACIN (Digital Audio Data Input) FS…
adamaero
  • 606
  • 1
  • 7
  • 28
2
votes
0 answers

Interfacing PCM3060 Audio Codec With STM32

I am using a STM32F4 MCU, currently prototyping on a Nucleo-F446RE. I have a PCM3060 audio CODEC to do the analog to digital conversion. I am attempting to use the I2S protocol in order to interface the stm32 chip with the CODEC to process real time…
APC77
  • 21
  • 1
2
votes
0 answers

How to connect 5 colored wire headphone to 3.5 TRS jack?

I have a somictone headphone and I want to repair its headphone jack, It contains five colored wires. Here are the wire and TRS jack. Please give me a feedback Can you please tell me how to wire this? I really appreciate your help.
Isuru Abey
  • 21
  • 1
  • 4
2
votes
0 answers

what's wrong with my codec's op amp output?

There's some thing wrong with my audio codec. Unlike the modern codec, its input gain is configured externally with op amp's resistor. However with unity gain, I see strange wave form on the input amplifier's output(AO pin), like below(My input…
iouzzr
  • 349
  • 2
  • 13
2
votes
1 answer

Is it 'normal' to use a DSP's internal timers to generate lower speed clock signals for audio codec sampling?

I'm currently working on a project that features a Blackfin BF592 processor (datasheet). I'm trying to interface this DSP with a stereo audio codec (datasheet). Originally, I assumed that this audio codec would have some high frequency clock signal…
Izzo
  • 1,984
  • 2
  • 18
  • 37
1
vote
0 answers

How to Switch DSP to Passive Speaker Driver?

I am working on an Active Noise Reduction project for a headset using Codec ADAU1772 from AD. There are two inputs, one of which is feedback mic. connected to AIN0, second is INT+ (Intercom or music) connected to AIN1. I take both inputs directly to…
Firat Dagkiran
  • 153
  • 1
  • 6
1
vote
0 answers

How to measure channel capacity performance for enhanced speech samples in GSM speech coders?

I've been conducting some research lately on Speech Enhancement of the ITU-T Recommended G.729 Voice Activity Detection (VAD) algorithm for GSM Speech coders. It has been suggested in the literature to measure the performance of speech enhancement…
daniel graham
  • 11
  • 1
1
vote
0 answers

PCM5242 DAC: DSP Program and DSP Frequency for high sampling rates

I want to use a PCM5242 DAC (datasheet) in a project The DAC has a built in DSP core that I don't want to use for anything custom. The DSP can be programmed with custom code, or predefined codes in the chip's ROM can be used. For normal operation…
GNA
  • 1,471
  • 13
  • 18
1
vote
1 answer

CS8406 Audio Interface (I2S->I2C)

I'm attempting to interface a MEMS Microphone with an ESP32 through a CS8406. I am aware that the ESP32 has a well-documented I2S hardware interface however for my project I cannot use it. (It's going to connect to a smartwatch I developed in which…
Caleb
  • 42
  • 3
1
vote
1 answer

CS4270 doesn't respond to I2C commands

I connected CS4270 to my ST32F446 nucleo board. Currently only I2C pins are connected, GND, AGND, all 3 power lines and address select pins. AD0,AD1 and AD2 are connected to GND. (the thing I don't understand is that datasheet says that 5 from 7…
atomd
  • 21
  • 3
1
vote
1 answer

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 CYW20706 SoC. Initially, we were going to use the…
user244360
  • 11
  • 2
1
2 3 4