Automated fitting of hearing devices
Systems and method for pre-fitting a sound processing device for a user in accordance with embodiments of the invention are disclosed. In many embodiments, systems and methods can be executed by a computing device and include obtaining a hearing map representing the user's hearing, establishing a virtual signal processing path in the computing device which reflects a signal processing function of the sound processing device, updating parameters of the virtual signal processing path based on said hearing map, and passing an audio signal through the virtual signal processing path and playing back the processed audio signal to the user.
1. A method of pre-fitting a customizable sound processing device for a user, the method executed by a computing device and comprising:
obtaining a hearing map representing the user's hearing, the hearing map being obtained by:
playing back acoustic signals to the user, the acoustic signals comprising at least one synthesized or recorded spoken word;
obtaining user input related to the user's perceptions of the acoustic signals, by providing a user interface through which the user may enter the word or words which the user heard;
determining an accuracy of the user input relative to the word or words actually played back and estimating, directly from the user input and without any intervening process of user specific testing, a percentage of information transmitted to the user; and
estimating, directly from the percentage of information transmitted to the user and without any intervening process of user-specific testing, hearing map parameters within specific frequency bands so as to derive the hearing map representing the user's hearing;
establishing a virtual signal processing path in the computing device which reflects a signal processing function of the customizable sound processing device;
updating parameters of the virtual signal processing path based on said hearing map; and
passing an audio signal through the virtual signal processing path and playing back the processed audio signal to the user.
2. The method of claim 1 wherein the pre-fitting is carried out prior to a prospective sale of the customizable sound processing device to the user.
3. The method of claim 1 , wherein, upon a subsequent sale of the customizable sound processing device to the user, the updated parameters are pre-loaded into the sound processing device to configure an initial customization of the sound processing device.
4. The method of claim 1 wherein the play back of the acoustic signals is performed in a manner to deliver sound substantially separately to each ear of the user.
5. The method of claim 1 wherein updating parameters is performed only after completion of obtaining the hearing map.
6. The method of claim 1 wherein the hearing map is retrieved from a data store.
7. A computing device for pre-fitting a customizable sound processing device for an individual, the device comprising:
a processor configured to obtain a hearing map representing the user's hearing by:
playing back acoustic signals to the user, the acoustic signals comprising at least one synthesized or recorded spoken word;
obtaining user input related to the user's perceptions of the acoustic signals, by providing a user interface through which the user may enter the word or words which the user heard;
determining an accuracy of the user input relative to the word or words actually played back and estimating, directly from the user input and without any intervening process of user-specific testing, a percentage of information transmitted to the user; and
estimating, directly from the percentage of information transmitted to the user and without any intervening processes of user-specific testing, hearing map parameters within specific frequency bands so as to derive the hearing map representing the user's hearing;
the processor further configured to establish a virtual signal processing path in the computing device which reflects a signal processing function of the customizable sound processing device, the processor further configured to update parameters of the virtual signal processing path based on said hearing map, and to pass an audio signal through the virtual signal processing path and play back the processed audio signal to the user.
8. The device of claim 7 further comprising at least one device selected from the group consisting of: a headset; headphones, or earbuds; to effect delivery of sound substantially separately to each ear of the user.
9. The device of claim 7 wherein the customizable sound processing device is selected from the group consisting of: the computing device, a desktop computer, a laptop computer, a mobile phone, a personal digital audio player, an open fit hearing aid, an occluding hearing aid, a headset, headphones, and an assistive listening device (ALD).
10. The method of claim 1 further comprising, after the step of playing back the processed audio signal:
evaluating the hearing of the user when aided by the virtual signal processing path; and
if the hearing of the user when aided is not satisfactory:
determining an updated hearing map for the user;
further updating parameters of the virtual signal processing path based on said updated hearing map; and
passing a further audio signal through the virtual signal processing path and playing back the processed further audio signal to the user.
11. The method of claim 10 wherein the updated hearing map is obtained by:
playing back acoustic signals to the user, the acoustic signals comprising at least one synthesized or recorded spoken word;
obtaining user input related to the user's perceptions of the acoustic signals, by providing a user interface through which the user may enter the word or words which the user heard;
determining an accuracy of the user input relative to the word or words actually played back and estimating directly from the user input and without any intervening process of user-specific testing a percentage of information transmitted to the user; and
estimating, directly from the percentage of information transmitted to the user and without any intervening process of user-specific testing, updated hearing map parameters within specific frequency bands so as to derive the updated hearing map representing the user's hearing.
12. The method of claim 3 further comprising:
the customizable sound processing device playing back an audio signal:
evaluating the hearing of the user when aided by the customizable sound processing device; and
if the hearing of the user when aided is not satisfactory:
determining an updated hearing map for the user;
further updating parameters of the virtual signal processing path based on said updated hearing map; and
passing a further audio signal through the virtual signal processing path and playing back the processed further audio signal to the user.
13. The method of claim 12 wherein the updated hearing map is obtained by:
playing back acoustic signals to the user, the acoustic signals comprising at least one synthesized or recorded spoken word;
obtaining user input related to the user's perceptions of the acoustic signals, by providing a user interface through which the user may enter the word or words which the user heard;
determining an accuracy of the user input relative to the word or words actually played back and estimating directly from the user input and without any intervening process of user-specific testing a percentage of information transmitted to the us; and
estimating, directly from the percentage of information transmitted to the user and without any intervening process of user-specific testing, updated hearing map parameters within specific frequency bands so as to derive the updated hearing map representing the user's hearing.