Questions tagged [audio-codec]
The audio-codec tag has no usage guidance.
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Audio Codec Input/Output Channel Stages
I am planning to build a PCB for a Eurorack Modular Synthesizer, incorporating an STM32 for DSP and a bidirectional Audio Codec like the TLV320AIC3104 to handle the ADC/DAC.
Eurorack audio signals ...
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Should any DAC with an SPI interface be called a codec IC?
It seems most codec ICs typically use I²S for audio data but can also use SPI or I²C.
Should any DAC with an SPI interface such as this one be called a codec IC? If not, what makes such chip be called ...
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Synchronizing multiple I2S codecs on stm32f405
I am designing an audio device that requires two CODECs to be connected to the MCU - two stereo outputs, two stereo inputs. When working with a single codec, no problems with synchronization occur ...
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I2S Interface between Bluetooth Module and CODEC
I need to interface my CYBT-343026-01 bluetooth module to the AK4619 CODEC via I2S interface.
The problem is that CYBT-343026-01 only provides BICK and LRCLK, but it doen't provide MCLK which is also ...
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Why does ESP32-LyraT-Mini V1.2 use an external ADC for the microphone when ADC is already available in Audio Codec?
Kindly refer to ES8311 audio codec datasheet and ESP32-LyraT-Mini V1.2 Schematic.. In the Lyrat mini board, an external ADC ES7243 is used to sample the audio signal from the microphone but an equally ...
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Why does the ES8374 have 5 pins to receive input from a microphone?
I am using a ES8374 codec for an audio application. I am not able to make out how to connect my analog condenser mic (which has two pins) to the ES8374 mic pins. (Refer to pictures from the datasheet)
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PCB design for Renesas' DA7212 audio codec
I'm designing my very first PCB. I managed to route all my components and I'm stuck at the last footprint - DA7212 from Renesas:
Those balls are both incredibly tiny and packed dense. I'd need a ...
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Grounded ADC pins on the CS4272-CZZR producing horrible noise?
I am currently busy with an audio processing project that requires 4 output channels. I have a Nucleo F303RE running some digital filtering on audio data, which is being read by one of the two CS4272s ...
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TRS differential input and output connector wiring for balanced audio CODEC I/O connections
I've been studying the ADAU1361 evaluation board and noticed an odd thing how the differential input and output connectors are connected in their schematic on its user guide, page 7, focus on the left ...
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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 ...
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Documentation/manual for stm32-wm8994 library?
I have a STM32F746G-DISCOVERY kit that has a WM8994 (Audio Hub CODEC). I'm learning how to generate a sound from the STM32F746G and send it to the WM8994 via Serial Audio Interface (SAI) to use in my ...
- 1,130
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Lots of audio codecs and few components: separate AGND from DGND?
I am trying to design a PCB that embeds 16 ADAU1787 audio codecs (ADC/DAC).
I want to design a board that connects to an FPGA through an FMC port and connects all the codecs to output connectors (...
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Can an ESP32 be fed an audio signal and then output that audio to a Bluetooth speaker?
I have a CODEC circuit with a AUX audio output. Is it possible to connect that output back to the ESP32 and transmit to a Bluetooth speaker using the ESP32-A2DP library?
If so, would this be the ...
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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) ...
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How long is the S/PDIF preamble?
I have a simple S/PDIF protocol question that I can't find the answer to anywhere. I'm trying to understand the protocol, and everywhere I look says the same thing: The length of a preamble pattern is ...
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Can I connect multiple different devices via a single I2S interface?
I am using a microcontroller with only one I2S interface. I am using MAX98357A which has 1 sound chip. There is 1 microphone, SPH0645. Can I connect these ICs to the same line provided that I cannot ...
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I need clarification for an audio power amplifier circuit component
Below is the block diagram of my first design using an audio power amplifier.
The input to the audio power amplifier comes from an SC200 module by Quectel.
The output of the PA is connected to a ...
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Are many capacitors in a row in parallel really needed for an audio circuit?
I get that smaller capacitors have lower parasitic inductance and resistance compared to larger capacitors. And lower parasitic impedance allows the smaller capacitors to be more effective at ...
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Understanding how audio is encoded on mysterious device to reprogram it
So I found a chanting lotus flower in the woods and I'm trying to figure out how to reprogram the audio on it... It has 4.5 hours of audio(!) stored on a 16MB flashrom, and is driven by a chip called ...
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Trying to understand description of aptX Lossless audio streaming codec bitrate
I was looking at this article about the aptX Lossless audio codec.
The article claims that this iteration of the aptX codec can stream CD quality audio losslessly. At the beginning of the article, it ...
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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 ...
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Digital radio to Bluetooth bridge
I'm studying the possibility of building a bridge from DAB+ (digital radio) towards Bluetooth. The reason is that all the good quality DAB+ tuners are really expensive and the cheap ones usually have ...
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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 ...
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408
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Connection of microphones to Stereo Audio Codec
I want to interface two electret microphones with a stereo audio codec. One mic will capture audio from one side of a box and the other one from the opposite side. I want to use TLV320AIC3254 from ...
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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 ...
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Is an AK4588VQ decoder able to pass PCM digital audio with its ADC digital interface?
I want to interface an AK4588VQ with only at maximum 5 wires. Is it possible? My system uses an STM32F746NG and requires two digital microphones (I2S) and one DAC. I've used this chip because I have ...
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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 ...
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Calculating Passive Analog Output Filter for CS42448
I'm designing schematics with the audio codec CS42448. The datasheet suggests output filters and I chose to follow the passive filter recommendation. I'm not sure though how to follow the calculation ...
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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 ...
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250
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Loopback Latency of an Audio CODEC?
I'm thinking way ahead about a possible future project which will contain, among many other things, a "DIY hearing aid" of sorts. Microphones feeding earbuds with some DSP in between, all ...
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