Method and system for measuring a system's transmission quality
First Claim
1. Method for measuring the transmission quality of an audio system, an input signal (X) being entered into the audio system, resulting in an output signal (Y), output by the audio system, the input signal and the output signal being processed preferably compared, comprising that the output signal and/or the input signal of the audio system are scaled in a way that small deviations of the power are compensated, while larger deviations are compensated partially, dependent on the power ratio.
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Abstract
Method and system for measuring the transmission quality of an audio transmission system, an input signal (X) being entered into the system, resulting in an output signal (Y), output by the system, both signals, the input signal and the output signal, being mutually processed, the method comprising that the output signal and/or the input signal of the system under test are scaled in a way that small deviations of the power are compensated, while larger deviations are compensated partially, dependent on the power ratio. An artificial reference speech signal may be created, for which the noise levels as present in the original input speech signal are lowered by a scaling factor that depends on the local level of the noise in this input.
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Citations
10 Claims
- 1. Method for measuring the transmission quality of an audio system, an input signal (X) being entered into the audio system, resulting in an output signal (Y), output by the audio system, the input signal and the output signal being processed preferably compared, comprising that the output signal and/or the input signal of the audio system are scaled in a way that small deviations of the power are compensated, while larger deviations are compensated partially, dependent on the power ratio.
- 6. System for measuring the transmission quality of an audio system, an input signal (X) being entered into the audio system, resulting in an output signal (Y), output by the audio system, the input signal and the output signal being mutually processed preferably compared, comprising scaling means for scaling the output signal and/or the input signal of the audio system in a way that small deviations of the power are compensated, while larger deviations are compensated partially, dependent on the power ratio.
Specification