# US 11,451,916 B2 · Sound adjustment method and sound adjustment device

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- Number: US 11,451,916 B2
- Document ID: US11451916B2
- Status: Granted
- Kind: B2
- Application number: 16/674,004
- Filed: 2019-11-05
- Published: 2021-01-21
- Granted: 2022-09-20
- Earliest claimed: 2019-07-18
- Assignees: Airoha Technology Corp.
- Applicants: Airoha Technology Corp.
- Inventors: Kuo-Wei Kao; Po-Jui Wu; Yu-Chieh Huang; Wei-Lin Chang; Kai-Yuan Hsiao; Cheng-Te Wang; I-Ting Lee; Kuo-Ping Yang
- Web page: https://patentgrep.com/patent/US11451916B2

## CPC

- G10L 21/0364: for improving intelligibility
- H04S 1/007: {in which the audio signals are in digital form (data reduction aspects thereof based on psychoacoustics G10L19/02)}
- A61M 21/00: Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
- G10L 19/018: Audio watermarking, i.e. embedding inaudible data in the audio signal
- H04R 5/04: Circuit arrangements, {e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments (combinations of amplifiers H03F3/68; stereophonic systems H04S)}
- A61M 21/02: for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia (for massage A61H; electrotherapy A61N, e.g. applying alternating or intermittent electric currents for producing anaesthesia A61N1/36021)
- A61M 2021/0027: {by the hearing sense}
- A61M 2021/0033: {subsonic}
- H04S 2400/15: Aspects of sound capture and related signal processing for recording or reproduction
- G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- H04S: STEREOPHONIC SYSTEMS
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- 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)

## Abstract

A sound adjustment method is disclosed. The sound adjustment method includes the following the steps: receiving a sound adjustment command; receiving a right channel sound signal and a left channel sound signal; selecting a corresponding adjustment mode according to the sound adjustment command and processing the right channel sound signal and the left channel sound signal based on the adjustment mode to generate a right channel first sound signal and a left channel first sound signal, wherein different adjustment modes have different intensity adjustment levels; shifting the frequency of the right channel first sound signal by X Hz to generate a right channel second sound signal and shifting the frequency of the left channel first sound signal by Y Hz to generate a left channel second sound signal, wherein 0.5≤|X−Y|≤100; outputting the right channel second sound signal and the left channel second sound signal.

## Claims

### Claim 1

A sound adjustment method, comprising the following steps:
receiving a sound adjustment command;
receiving a right channel sound signal and a left channel sound signal which is different from the right channel sound signal;
selecting a corresponding adjustment mode according to the sound adjustment command and processing the right channel sound signal and the left channel sound signal based on the adjustment mode to generate a right channel first sound signal and a left channel first sound signal, wherein different adjustment modes have different intensity adjustment levels; when the adjustment mode has a greater intensity adjustment level, the right channel first sound signal is more similar to the left channel first sound signal; when the adjustment mode has a smaller intensity adjustment level, the right channel first sound signal is less similar to the left channel first sound signal;
when the adjustment mode has the largest intensity adjustment level, the right channel first sound signal is an equal mixture of the right channel sound signal and the left channel sound signal and the left channel first sound signal is also an equal mixture of the right channel sound signal and the left channel sound signal;
shifting the frequency of the right channel first sound signal by X Hz to generate a right channel second sound signal and shifting the frequency of the left channel first sound signal by Y Hz to generate a left channel second sound signal, wherein 0.5≤|X−Y|≤100; and
outputting the right channel second sound signal and the left channel second sound signal.

### Claim 2 (depends on 1)

The sound adjustment method as claimed in claim 1, wherein when the adjustment mode has the smallest intensity adjustment level, the right channel first sound signal is equal to the right channel sound signal and the left channel first sound signal is equal to the left channel sound signal.

### Claim 3 (depends on 1)

The sound adjustment method as claimed in claim 1, wherein |X|=|Y|.

### Claim 4 (depends on 1)

The sound adjustment method as claimed in claim 1, wherein X=0 and Y≠0.

### Claim 5 (depends on 1)

The sound adjustment method as claimed in claim 1, wherein X≠0 and Y=0.

### Claim 6

A sound adjustment device, comprising:
a command receiving end, which receives a sound adjustment command;
a sound signal input end, which receives a right channel sound signal and a left channel sound signal which is different from the right channel sound signal;
a signal processing module, which is electrically connected to the command receiving end and the sound signal input end and selects a corresponding adjustment mode according to the sound adjustment command and processes the right channel sound signal and the left channel sound signal based on the adjustment mode to generate a right channel first sound signal and a left channel first sound signal, wherein different adjustment modes have different intensity adjustment levels; when the adjustment mode has a greater intensity adjustment level, the right channel first sound signal is more similar to the left channel first sound signal; when the adjustment mode has a smaller intensity adjustment level, the right channel first sound signal is less similar to the left channel first sound signal; when the adjustment mode has the largest intensity adjustment level, the right channel first sound signal is an equal mixture of the right channel sound signal and the left channel sound signal and the left channel first sound signal is also an equal mixture of the right channel sound signal and the left channel sound signal;
a frequency adjustment module, which shifts the frequency of the right channel first sound signal by X Hz to generate a right channel second sound signal and shifts the frequency of the left channel first sound signal by Y Hz to generate a left channel second sound signal, wherein 0.5≤|X−Y|≤100; and
a sound signal output end, which is electrically connected to the frequency adjustment module and outputs the right channel second sound signal and the left channel second sound signal.

### Claim 7 (depends on 6)

The sound adjustment device as claimed in claim 6, wherein when the adjustment mode has the smallest intensity adjustment level, the right channel first sound signal is equal to the right channel sound signal and the left channel first sound signal is equal to the left channel sound signal.

### Claim 8 (depends on 6)

The sound adjustment device as claimed in claim 6, wherein |X|=|Y|.

### Claim 9 (depends on 6)

The sound adjustment device as claimed in claim 6, wherein X=0 and Y≠0.

### Claim 10 (depends on 6)

The sound adjustment device as claimed in claim 6, wherein X≠0 and Y=0.