convert a voice sound into a digital format,
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Mouser #: 595-PCM1870RHFR
Mfr. #: PCM1870RHFR
Mfr.: Texas Instruments
Customer #:
Description: Audio A/D Converter ICs Lo Pwr Stereo Audio
https://www.ti.com/lit/ds/symlink/pcm1870.pdf?ts=1733093445849&ref_url=https%253A%252F%252Fwww.mouser.com%252F
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audio to digital convertion IC chip
Mouser #: 412-AK5720VT
Mfr. #: AK5720VT
Mfr.: Asahi Kasei Microdevices
https://www.mouser.com/datasheet/2/1431/ak5720vt_en_datasheet-3010131.pdf
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$1.09$3.5969% off
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4MB Sound Chip, CH7003 High Quality Voice Chip with Programmable UART Serial Port Support DAC Output External Power Amplifier
https://www.aliexpress.us/item/3256806698459994.html?src=google&gatewayAdapt=glo2usa
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To convert a voice sound into a digital format, a process called "analog-to-digital conversion (ADC)" is used, where a microphone captures the analog voice signal, which is then sampled at regular intervals and converted into numerical values representing the amplitude of the sound wave, essentially translating the voice into a digital data stream that can be stored and manipulated on a computer.
Key points about voice digitization:
Microphone:
The first step is to record the voice using a microphone which picks up the sound waves as an analog signal.
Sampling:
The analog signal is then "sampled" at regular intervals, meaning the amplitude of the sound wave is measured multiple times per second.
Quantization:
These sampled values are then converted into digital values by assigning them a specific numerical representation within a set range.
Bit Depth:
The precision of the digital representation is determined by the "bit depth," which refers to the number of possible values for each sample.
Sample Rate:
The frequency at which the samples are taken is called the "sample rate," and a higher sample rate results in better audio quality.
Applications of voice digitization:
Voice recording: Recording voice memos, podcasts, or voiceovers on a computer.
Voice recognition software: Converting spoken words into text using AI algorithms.
Voice cloning: Creating a digital replica of someone's voice to generate synthetic speech.
Voice communication: Transmitting voice over the internet through digital signals.
REFERENCE
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S/PDIF DAC Digital to Analogue Converter
https://circuit-zone.com/index.php?electronic_project=72
https://electronics-diy.com/electronic_schematic.php?id=806
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A simple circuit with an optocoupler creates a “tube” sound
A simple circuit with an optocoupler creates a “tube” sound
https://www.edn.com/a-simple-circuit-with-an-optocoupler-creates-a-tube-sound/#google_vignette
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https://circuit-zone.com/index.php?electronic_project=72
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DAC with integrated circuit PCM1794A. It is one of excellent audio DACs from Burr Brown (Texas Instruments). It has 24-bit resolution, 192kHz sample frequency, 8x oversampling digital filter, differential current output and SNR 127dB.
https://circuit-zone.com/index.php?electronic_project=154
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https://circuit-zone.com/index.php?electronic_project=153
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https://circuit-zone.com/index.php?cat=audio_dac
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The heart of the integrated circuit is PCM2902 of Burr-Brown by Texas Instruments. It is stereo 16-bit DAC and ADC, fully compatible with USB 1.1. DAC sampling frequencies are 32, 44.1 and 48 kHz, ADC has 8, 11.025, 16, 22.05, 32, 44.1 and 48 kHz. If you want more sound intensity, you will need to connect TDA 7050 amplifier to audio output.
https://circuit-zone.com/index.php?cat=audio_dac
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Digital Optical Toslink SPDIF Coax to Analog RCA Audio Converter Adapter with Fiber Cable
Sound Semiconductor announced single and dual channel VCA additions to its product lineup, the ProCircuit SSI2161 and FatKeys SSI2162.The ICs are part of a family of affordable high-performance VCAs from the company, now offering a single, dual and quad versions. The SSI2164 offers four VCAs in a compact SOP package with lowest cost-per VCA, while the new SSI2162 is a versatile building block for high-performance audio applications, and the single-channel SSI2161 provides lowest noise
https://audioxpress.com/news/sound-semiconductor-expands-ic-range-with-new-single-and-dual-vca-chips
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https://www.soundsemiconductor.com/
https://www.soundsemiconductor.com/downloads/ssi2161datasheet.pdf
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