Programmable audio modulus conversion chip and realization method thereof

Abstract

The invention discloses a programmable audio modulus conversion chip and a realization method thereof. The programmable audio modulus conversion chip includes a digital signal processing unit and a configurable interface connected with the digital signal processing unit; before the working condition of the chip, through the configurable interface, the chip configures the operation program, which meets the needs of application scenes, of the audio modulus conversion chip into the digital signal processing unit so as to achieve the programmable operation of audio processing, and therefore the problem is solved that the digital signal processing program, in audio processing, of an existing audio modulus converter cannot correspond to the application scenes well.

Description

technical field [0001] The invention relates to an audio analog-to-digital converter (ADC), in particular to an audio analog-to-digital conversion chip with programmable operation in the audio processing process and an implementation method thereof. Background technique [0002] With the rapid development of integrated circuit technology, powerful, flexible, reliable, and complex digital signal processing technology can now be used to process the digital form of analog signals to meet the diverse needs of users. Audio analog-to-digital converter (ADC), as a functional component that converts analog domain audio signals into digital domain audio signals, has naturally developed rapidly under this trend, and is widely used in various multimedia systems as audio processing front-end components. [0003] The delta-sigma digital-to-analog converter implementation method has the characteristics of low resource overhead and high signal-to-noise ratio, and is widely used in the fie...

AI Technical Summary

Problems solved by technology

[0004] This audio ADC for a specific frequency range is satisfactory for general audio processing requirements, but has the following disadvantages: 1. When the sampling frequency of the audio is a relatively low frequency, the final filter is not implemented for this frequency. The filtering effect is not ideal; 2. When the audio application environment contains some noise in several bands, the filtering effect is not ideal

However, this method of introducing configurable filter coefficients also has limitations. For example, the number, type, order, and frequency band of internal filters are determined when they are implemented, and cannot be changed by reconfiguring registers. ; In some applications, this determinism limits the final processing effect of the audio ADC

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