# US 10,313,791 B2 · System and method for digital signal processing

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,313,791 B2
- Document ID: US10313791B2
- Status: Granted
- Kind: B2
- Application number: 15/906,614
- Filed: 2018-02-27
- Published: 2018-09-06
- Granted: 2019-06-04
- Earliest claimed: 2013-10-22
- Assignees: Bongiovi Acoustics LLC
- Applicants: Bongiovi Acoustics LLC
- Inventors: Anthony Bongiovi; Philip Fuller; Glenn Zelniker
- Web page: https://patentgrep.com/patent/US10313791B2

## CPC

- H04R 3/04: for correcting frequency response
- G06F 3/165: {Management of the audio stream, e.g. setting of volume, audio stream path}
- H03G 3/002: {Control of digital or coded signals (H03G3/3089 take precedence)}
- H03G 5/165: {Equalizers; Volume or gain control in limited frequency bands}
- H03G 7/002: {in untuned or low-frequency amplifiers, e.g. audio amplifiers (H03G7/007, H03G7/001, H03G7/008, H03G7/02, H03G7/06 take precedence)}
- H03G 7/007: {of digital or coded signals}
- H03G 9/005: {of digital or coded signals}
- H03G 9/025: {frequency-dependent volume compression or expansion, e.g. multiple-band systems (H03G9/10, H03G9/18 take precedence)}
- H04S 7/307: {Frequency adjustment, e.g. tone control (H04S7/301 takes precedence)}
- G06F 16/60: of audio data
- G10L 21/034: Automatic adjustment
- H03G 3/005: {Control by a pilot signal (H03G3/001 takes precedence)}
- H03G 5/025: {Equalizers; Volume or gain control in limited frequency bands}
- H03G 9/14: for gain control and tone control
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H03G: CONTROL OF AMPLIFICATION
- H04S: STEREOPHONIC SYSTEMS
- G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING

## Abstract

A system and method for digital processing including a gain element to process an input audio signal, a high pass filter to then filter the signal and create a high pass signal, a first filter module to filter the high pass signal and create a first filtered signal and a splitter to split the high pass signal into two high pass signals. The first filter module filters one high pass signals before a first compressor modulates the signal or a high pass signal to create a modulated signal. A second filter module filters the modulated signal to create a second filtered signal that is processed by a first processing module including a band splitter that splits the signal into low and high band signals that are then modulated by compressors. A second processing module processes the modulated low and high band signals to create an output signal.

## Claims

### Claim 1

A system for digital signal processing of an input audio signal comprising:
a high pass filter configured to filter an audio signal to create a high pass signal,
a first filter module configured to filter the high pass signal to create a first filtered signal,
a first compressor configured to modulate the first filtered signal to create a modulated signal,
a second filter module configured to filter the modulated signal to create a second filtered signal,
a first processing module configured to process the second filtered signal to create a processed signal,
a band splitter configured to split the processed signal into at least a first low band signal and a second high band signal,
at least a first modulator structured to modulate said first band signal and a second modulator structured to modulate said second band signal to create a first and a second modulated band signal, and
a second processing module configured to process at least said first and said second modulated band signals to create an output signal.

### Claim 2 (depends on 1)

A system as recited in claim 1 wherein the first filter module comprises:
a first low shelf filter configured to filter the high pass signal to create a first low shelf signal,
a first high shelf filter configured to filter the first low shelf signal to create the first filtered signal.

### Claim 3 (depends on 1)

A system as recited in claim 1 wherein said second filter module comprises:
a second low shelf filter configured to filter the modulated signal to create a second low shelf signal, and
a second high shelf filter configured to filter second low shelf signal to create the second filtered signal.

### Claim 4 (depends on 1)

A system as recited in claim 1 wherein said first filter module comprises a low shelf filter and said second filter module comprises a high shelf filter.

### Claim 5 (depends on 1)

A system as recited in claim 1 further comprising a first gain element configured to adjust a gain of the input audio signal prior to said high pass filter.

### Claim 6 (depends on 1)

A system as recited in claim 1 wherein said first processing module comprises a gain element configured to adjust the gain of the second filtered signal to create a gain signal; and a peak/dip module configured to process the gain signal to create the processed signal.

### Claim 7 (depends on 1)

A system as recited in claim 1 wherein said second processing module comprises: a summing module configured to combine at least the first and second modulated band signals to create a combined signal, and a gain element configured to adjust the gain of the combined signal to create the output signal.

### Claim 8 (depends on 1)

A system as recited in claim 1 wherein said band splitter splits the processed signal into at least a low band signal and a high band signal, and said first modulator comprises a band compressor.

### Claim 9 (depends on 8)

A system as recited in claim 8 wherein said first modulator comprises a low band modulator and said second modulator comprises a high band modulator.