Microphone emulation
AssigneeSabine, Inc.
InventorsDoran Oster, Gary Miller, Boris Lerner
Life of this patent
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Abstract
An emulation circuit includes a digital signal processor with a digital filter controlled by frequency response conversion parameters for converting a standard microphone signal into a signal emulating the frequency response of one of a plurality of microphones selected by a selector connected to the digital signal processor. Optionally the conversion parameters can also include phase response conversion parameters. The emulation circuit can be included in a receiver for a wireless microphone or in a microphone itself.
Claims8
A conversion circuit for converting a microphone signal into a signal emulating a different microphone response, comprising:
- an analog to digital converter receiving an analog microphone signal for converting the signal into a digitized microphone signal;
- a selector for selecting a desired microphone to be emulated from a plurality of different microphones;
- a memory containing a plurality of sets of conversion parameters, each set for converting the digitized microphone signal into a signal emulating a corresponding one of the plurality of different microphones;
- a digital signal processor for receiving the digitized microphone signal;
- means for loading the corresponding conversion parameters from the memory into the digital signal processor;
- and
- means for operating the digital signal processor based on the loaded conversion parameters to convert the digitized microphone signals into a converted digitized signal emulating the selected microphone.
A wireless microphone receiver circuit comprising:
- an RF receiver for receiving a wireless microphone signal having a frequency response of a standard microphone;
- a digital signal processor for receiving the wireless microphone signal;
- a memory having a plurality of sets of frequency response conversion parameters corresponding to different microphones;
- a selector connected to the digital signal processor for selecting one of the different microphones to be emulated;
- and
- said digital signal processor operating in accordance with the set of frequency response conversion parameters corresponding to the selected microphone to convert the wireless microphone signal into a signal having a frequency response emulating the selected microphone.
A microphone comprising:
- a transducer for converting sound energy into an electrical signal in accordance with a standard frequency response;
- an analog to digital converter for converting the electrical signal into a digitized microphone signal;
- a digital signal processor receiving the digitized microphone signal;
- a selector connected to the digital signal processor for selecting one of a plurality of different microphones to be emulated;
- a memory containing a plurality of sets of frequency response conversion parameters for converting the digitized microphone signal into converted signals having a frequency response corresponding to the different microphones;
- and
- said digital signal processor controlled by the conversion parameters of the selected microphone for converting the digitized microphone signal into a signal emulating the frequency response of the selected microphone.
Dependencies are inferred from the claim text.