Frequency expansion for synthesizer
AssigneePalm, Inc.
InventorIhle Marc
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Abstract
A method is provided for generating synthetic audio signals with a synthesizer by generating a synthesizer output signal with a low sampling rate of the synthesizer. Because of the low sampling rate, missing high-frequency components of the synthesizer output signal are generated by adding a high-frequency signal. An amplitude-modulated high-frequency signal is preferred, and the amplitude-modulated signal S and synthesizer output signal are converted to a higher sampling rate.
Claims17
A method for generating synthetic audio signals, the method comprising:
- providing a synthesizer for generating a synthesizer output signal with a low sampling rate of the synthesizer;
- and
- generating missing high frequency components of the synthesizer output signal, due to the low sampling rate, by adding a high-frequency signal.
A method for generating synthetic audio signals as claimed in claim 1, wherein the method is employed in a mobile terminal. 18. A method for generating synthetic audio signals as claimed in claim 17, wherein the mobile terminal is a mobile telephone.
Dependencies are inferred from the claim text.