Personal speakerphone device

A method to make a personal speakerphone device for teleconferencing a local participant with near side audio data and a far side participant with far side audio data, comprising:

• coupling a controller to a speaker and a microphone, said controller controls and processes the near side audio data and the far side audio data and the conversion of the audio data between analog audio data and digital audio data;
• coupling said controller to analog to digital conversion circuitry that converts and processes analog audio data to digital audio data;
• coupling said controller to digital to analog conversion circuitry that converts and processes digital audio data to analog audio data;
• coupling one or more ports for data through which audio data is transferred to said controller;
• coupling an enclosure with said speaker and said microphone within a coupling frequency range, said enclosure houses said speaker, microphone, said controller, and supporting circuitry;
• coupling a first frequency band decomposer and a second frequency band decomposer to said controller, said first frequency band decomposer decomposes the far side audio data into one or more frequency bands, said second frequency band decomposer decomposes the near side audio data into one or more frequency bands;
• coupling said controller to one or more echo cancellers wherein each individual echo canceller further comprises:
• a coefficient adaption module, said coefficient adaptation module uses a set of coefficients, an echo cancelling filter, and a noise suppression and other processing module;
• wherein said echo cancellers convolve said coefficients with the decomposed far side audio data to perform echo cancellation and wherein said echo cancellers process the decomposed near side audio data to perform echo cancellation;
• coupling said controller to a converger that converges said coefficients to a solution corresponding to the accumulation of the echo paths in the physical environment, said converger being further controllable such that at certain times adaptation of said coefficients proceeds and at other times adaptation of said coefficients is prevented;
• coupling said controller to a primary doubletalk detector that receives low frequency bands from the decomposed audio data from said first and second frequency band decomposers, said primary doubletalk detector controlling the preceding of whether said converger is adapting said coefficients, said primary doubletalk detector determines doubletalk on the low frequency bands by a comparison between the levels of the audio data received from said first and second frequency decomposers;
• and
• coupling said controller to a secondary doubletalk detector that operates to confirm good doubletalk detection for said primary doubletalk detector, said secondary doubletalk detector operates as a false doubletalk detector for said primary doubletalk detector, and said secondary doubletalk detector operates as a coefficient incoherence detector.

A method to use a personal speakerphone device for teleconferencing a local participant with near side audio data and a far side participant with far side audio data, comprising:

• providing a controller that couples to a speaker and a microphone, said controller controls and processes the near side audio data and the far side audio data and the conversion of the audio data between analog audio data and digital audio data;
• providing analog to digital conversion circuitry that converts and processes analog audio data to digital audio data, said analog to digital conversion circuitry couples to said controller;
• providing digital to analog conversion circuitry that converts and processes digital audio data to analog audio data, said digital to analog conversion circuitry couples to said controller;
• providing one or more ports for data through which audio data is transferred, said ports for data couple with said controller;
• providing an enclosure that couples said speaker and said microphone within a coupling frequency range, said enclosure houses said speaker, microphone, said controller, and supporting circuitry;
• decomposing the far side audio data into one or more frequency bands using a first frequency band decomposer, and decomposing the near side audio data into one or more frequency bands using a second frequency band decomposer, said first and second frequency band decomposers couple to said controller;
• convolving a set of coefficients with the decomposed far side audio data to perform echo cancellation and processing the near side audio data to perform echo cancellation;
• wherein said convolving steps use one or more echo cancellers that couple to said controller wherein each individual echo canceller further comprises:
• a coefficient adaption module, said coefficient adaptation module uses a set of coefficients, an echo cancelling filter, and a noise suppression and other processing module;
• converging said coefficients to a solution corresponding to the accumulation of the echo paths in the physical environment using a converger that couples to said controller, said converger being further controllable such that at certain times adaptation of said coefficients proceeds and at other times adaptation of said coefficients is prevented;
• receiving low frequency bands from the decomposed audio data from said first and second frequency band decomposers using a primary doubletalk detector that couples to said controller, said primary doubletalk detector controlling the preceding of whether said converger is adapting said coefficients, said primary doubletalk detector determines doubletalk on the low frequency bands by a comparison between the levels of the audio data received from said first and second frequency decomposers;
• and
• confirming good doubletalk detection for said primary doubletalk detector using a secondary doubletalk detector that couples to said controller, said secondary doubletalk detector operates as a false doubletalk detector for said primary doubletalk detector, and said secondary doubletalk detector operates as a coefficient incoherence detector.

A program storage device readable by a computing device that tangibly embodies a program of instructions executable by the computing device to perform a method to use a personal speakerphone device for teleconferencing a local participant with near side audio data and a far side participant with far side audio data, comprising:

• providing a controller that couples to a speaker and a microphone, said controller controls and processes the near side audio data and the far side audio data and the conversion of the audio data between analog audio data and digital audio data;
• providing analog to digital conversion circuitry that converts and processes analog audio data to digital audio data, said analog to digital conversion circuitry couples to said controller;
• providing digital to analog conversion circuitry that converts and processes digital audio data to analog audio data, said digital to analog conversion circuitry couples to said controller;
• providing one or more ports for data through which audio data is transferred, said ports for data couple with said controller;
• providing an enclosure that couples said speaker and said microphone within a coupling frequency range, said enclosure houses said speaker, microphone, said controller, and supporting circuitry;
• decomposing the far side audio data into one or more frequency bands using a first frequency band decomposer, and decomposing the near side audio data into one or more frequency bands using a second frequency band decomposer, said first and second frequency band decomposers couple to said controller;
• convolving a set of coefficients with the decomposed far side audio data to perform echo cancellation and processing the near side audio data to perform echo cancellation;
• wherein said convolving steps use one or more echo cancellers that couple to said controller wherein each individual echo canceller further comprises:
• a coefficient adaption module, said coefficient adaptation module uses a set of coefficients, an echo cancelling filter, and a noise suppression and other processing module;
• converging said coefficients to a solution corresponding to the accumulation of the echo paths in the physical environment using a converger that couples to said controller, said converger being further controllable such that at certain times adaptation of said coefficients proceeds and at other times adaptation of said coefficients is prevented;
• receiving low frequency bands from the decomposed audio data from said first and second frequency band decomposers using a primary doubletalk detector that couples to said controller, said primary doubletalk detector controlling the preceding of whether said converger is adapting said coefficients, said primary doubletalk detector determines doubletalk on the low frequency bands by a comparison between the levels of the audio data received from said first and second frequency decomposers;
• and
• confirming good doubletalk detection for said primary doubletalk detector using a secondary doubletalk detector that couples to said controller, said secondary doubletalk detector operates as a false doubletalk detector for said primary doubletalk detector, and said secondary doubletalk detector operates as a coefficient incoherence detector.