Abstract: An audio processing circuit comprises an analyzer circuit that includes a plurality of energy detector units, and an equalizer circuit that includes a plurality of equalization filters. The equalizer circuit is coupled with the analyzer circuit. The analyzer circuit is configured to receive an audio signal, obtain sub-bands of the audio signal using the energy detector units, measure energy of each sub-band, compare the energy of each sub-band to a threshold energy value and, based on the comparison, determine parameters for an equalization filter for processing the sub-band. The equalizer circuit is configured to receive the audio signal concurrently with reception of the audio signal by the analyzer circuit, obtain the sub-bands using the equalization filters, receive the parameters for the equalization filters from the analyzer circuit, equalize each sub-band by applying the parameters corresponding to the sub-band, and generate an output audio signal that includes the equalized sub-bands.

Abstract: An audio processing circuit comprises an analyzer circuit that includes a plurality of energy detector units, and an equalizer circuit that includes a plurality of equalization filters. The equalizer circuit is coupled with the analyzer circuit. The analyzer circuit is configured to receive an audio signal, obtain sub-bands of the audio signal using the energy detector units, measure energy of each sub-band, compare the energy of each sub-band to a threshold energy value and, based on the comparison, determine parameters for an equalization filter for processing the sub-band. The equalizer circuit is configured to receive the audio signal concurrently with reception of the audio signal by the analyzer circuit, obtain the sub-bands using the equalization filters, receive the parameters for the equalization filters from the analyzer circuit, equalize each sub-band by applying the parameters corresponding to the sub-band, and generate an output audio signal that includes the equalized sub-bands.

Abstract: Systems, methods, and other embodiments associated with converting an input signal into an output signal with a different sampling rate. In one embodiment, an apparatus includes a feedforward circuit configured to receive the input signal comprised of discrete data samples with the first sampling rate and to generate a first intermediate value based, at least in part, on a feedforward coefficient and the input signal. The apparatus includes a feedback circuit configured to generate a second intermediate value that is based, at least in part, on a feedback coefficient and a predetermined number of previous samples of the output signal. The apparatus includes a signal combiner configured to combine the first intermediate value and the second intermediate value together to interpolate a data sample of the output signal at the second sampling rate. The output signal is a converted form of the input signal at the second sampling rate.