Method and system for processing high quality audio in a hardware audio codec for audio transmission

摘要

Aspects of a method and/or system for processing high quality audio in a hardware audio CODEC for audio transmission are provided. In this regard, an audio signal may be down-sampled via a cascaded plurality of filters and sample rate converters in the hardware audio CODEC. Additionally, a portion of each sample of the audio signal may be selected based on an origin of the audio signal. The selected portion of each sample of the audio signal may comprise 16 or 18 bits. The selected portion may be determined based on a type, a class, a manufacturer identifier, and/or a model identifier of the origin the audio signal. Coefficients of the filters may be configured based on the origin of the audio signal. One or more of the filters may comprise one or more cascaded biquads. The sample rate converters may comprise one or more CIC decimation filters.

主权项

1. A method for processing an audio signal in an audio processing system, the method comprising:
determining, from a plurality of audio input devices including a first audio input device and a second audio input device, an originating audio input device that originated the audio signal; determining, based on the originating audio input device, a path of the audio processing system to process the audio signal, wherein the path is a dual voice path or a high quality audio path; configuring a filter in the path to select a window of bits from a plurality of sample bits of a sample of the audio signal, wherein a size and a position of the window of bits is determined based on the originating audio input device; adjusting, based on a sampling frequency of the audio signal, a filtering and decimation module of the filter to configure a decimation ratio of the filter; and adjusting a coefficient of the filter based on the originating audio input device and the sampling frequency.