Method and device for limiting of output synthesis distortion in a sound codec
AssigneeVoiceage Corporation
InventorVaclav Eksler
Life of this patent
Estimating the term…
Abstract
A two-stage distortion limiter and method for limiting distortion in a sound signal, for example an output sound signal synthesis from a sound signal decoder. In a first stage, a level detector detects an amplitude value of the sound signal and computes a control gain using the detected amplitude value, and an attenuator reduces the level of the sound signal using the control gain. In a second stage, a saturation detector detects saturation in the sound signal and updates the control gain in response to detection of saturation.
Claims40
A two-stage distortion limiter for limiting distortion in a sound signal, comprising:
- at least one processor;
- and
- a memory coupled to the processor and storing non-transitory instructions that when executed cause the processor to implement:
- a first stage comprising:
- a level detector for detecting an amplitude value of the sound signal and for computing a control gain using the detected amplitude value;
- an attenuator of the level of the sound signal using the control gain;
- and
- a second stage comprising:
- a saturation detector for detecting saturation in the sound signal and for updating the control gain in response to detection of saturation.
A two-stage method for limiting distortion in a sound signal, comprising:
- in a first stage:
- detecting an amplitude value of the sound signal and computing a control gain using the detected amplitude value;
- attenuating the level of the sound signal using the control gain;
- and
- in a second stage:
- detecting saturation in the sound signal and updating the control gain in response to detection of saturation.
A two-stage distortion limiter for limiting distortion in a sound signal, comprising:
- a first stage comprising:
- a level detector for detecting an amplitude value of the sound signal and for computing a control gain using the detected amplitude value;
- an attenuator of the level of the sound signal using the control gain;
- and
- a second stage comprising:
- a saturation detector for detecting saturation in the sound signal and for updating the control gain in response to detection of saturation.
A two-stage distortion limiter for limiting distortion in a sound signal, comprising:
- at least one processor;
- and
- a memory coupled to the processor and storing non-transitory instructions that when executed cause the processor to:
- in a first stage:
- detect an amplitude value of the sound signal and compute a control gain using the detected amplitude value;
- attenuate the level of the sound signal using the control gain;
- and
- in a second stage:
- detect saturation in the sound signal and update the control gain in response to detection of saturation.
Dependencies are inferred from the claim text.