Processing audio signals
AssigneeNokia Technologies Oy
InventorsSujeet Shyamsundar Mate, Lasse Laaksonen
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Abstract
A method, apparatus and computer program including obtaining a first audio signal from at least a first microphone located at a first distance from an audio source; obtaining a local audio signal from a local microphone wherein the local microphone is located closer to the audio source than the first microphone; identifying the audio source using the first audio signal and the local audio signal; using the identified audio source to determine a delay between the first audio signal and the local audio signal: and using the determined delay to determine the length of the first audio signal and the local audio signal to be made available for processing so as to enable temporal alignment of at least the first audio signal and the local audio signal.
Claims20
A method comprising:
- obtaining a first audio signal from at least a first microphone located at a first distance from an audio source;
- obtaining a local audio signal from a local microphone wherein the local microphone is located closer to the audio source than the first microphone;
- identifying the audio source using the first audio signal and the local audio signal;
- using the identified audio source to determine a delay between the first audio signal and the local audio signal;
- and
- using:
- the determined delay,
- and at least one parameter, related to a bitrate associated with the identified audio source,
- to determine a length of the first audio signal and the local audio signal to be made available for processing, wherein the determined length is configured to enable temporal alignment of at least the first audio signal and the local audio signal.
An apparatus comprising:
- processing circuitry;
- and
- memory circuitry including computer program code, the memory circuitry and the computer program code configured to, with the processing circuitry, enable the apparatus to:
- obtain a first audio signal from at least a first microphone located at a first distance from an audio source;
- obtain a local audio signal from a local microphone wherein the local microphone is located closer to the audio source than the first microphone;
- identify the audio source using the first audio signal and the local audio signal;
- use the identified audio source to determine a delay between the first audio signal and the local audio signal;
- and
- use:
- the determined delay, and
- at least one parameter, related to a bitrate associated with the identified audio source,
- to determine a length of the first audio signal and the local audio signal to be made available for processing, wherein the determined length is configured to enable temporal alignment of at least the first audio signal and the local audio signal.
Dependencies are inferred from the claim text.