Dynamic selection among acoustic transforms

A computer-readable storage device comprising instructions that cause one or more processors to perform operations comprising:

• receiving speech data from a user device;
• receiving an indication of the user device;
• executing a speech recognition algorithm that selectively retrieves, from one or more storage devices, a plurality of pre-stored user and acoustic condition specific transforms based on the received indication of the user device, and that utilizes the received speech data as an input into pre-stored mathematical models of the retrieved plurality of pre-stored user and acoustic condition specific transforms to convert the received speech data into one or more word strings that each represent at least a portion of the received speech data, wherein each one of the plurality of pre-stored user and acoustic condition specific transforms is a transform that is both specific to the user device and specific to one acoustic condition from among a plurality of different acoustic conditions, wherein each of the different acoustic conditions comprises a context in which the speech data could have been provided, and wherein each of the plurality of pre-stored user and acoustic condition specific transforms and each of the pre-stored mathematical models that are utilized to convert the received speech data into the one or more word strings were generated and stored in the one or more storage devices prior to receipt of the speech data from the user device and prior to receipt of the indication of the user device;
• estimating which word string of the one or more word strings more accurately represents the received speech data;
• selecting, based on the estimation and from the plurality of user and acoustic condition specific transforms, an appropriate user and acoustic condition specific transform for conversion of the speech data into the word string estimated to more accurately represent the received speech data;
• and
• transmitting the word string to at least one of the user device or one or more servers.

A speech recognition device comprising:

• a transceiver that receives speech data from a user device and an indication of the user device;
• one or more storage devices that pre-store a plurality of user and acoustic condition specific transforms prior to the receipt of the speech data, and mathematical models of the user and acoustic condition specific transforms prior to the receipt of the speech data, wherein each one of the plurality of pre-stored user and acoustic condition specific transforms is a transform that is both specific to the user device and specific to one acoustic condition from among a plurality of different acoustic conditions, and wherein each of the different conditions comprises a context in which the speech data could have been provided;
• and
• one or more processors configured to:
• execute a speech recognition algorithm that selectively retrieves the plurality of user and acoustic condition specific transforms based on the received indication of the user device, and that utilizes the received speech data as an input into the mathematical models of the retrieved plurality of pre-stored user and acoustic condition specific transforms to convert the received speech data into one or more word strings that each represent at least a portion of the received speech data, wherein each of the plurality of pre-stored user and acoustic condition specific transforms and each of the pre-stored mathematical models that are utilized to convert the received speech data into the one or more word strings were generated and stored in the one or more storage devices prior to receipt of the speech data from the user device and prior to receipt of the indication of the user device;
• and
• estimate which word string of the one or more word strings more accurately represents the received speech data, and select, based on the estimation and from the plurality of user and acoustic condition specific transforms, an appropriate user and acoustic condition specific transform for conversion of the speech data into the word string estimated to more accurately represent the received speech data,
• wherein the transceiver is configured to transmit the word string to at least one of the user device or one or more servers.