1. A computer-implemented method comprising: receiving a raw audio waveform from a user device, where the raw audio waveform is recorded by the user device and contains speech data of a user; providing metadata and the raw audio waveform to a third-party processing system, where the metadata identifies one or more frequency components to be redacted from a frequency representation of the raw audio waveform; directing the third-party processing system to perform an operation on the raw audio waveform, wherein the operation includes: generating the frequency representation of the raw audio waveform, removing the one or more frequency components from the frequency representation that identify the user to produce a modified frequency representation, and generating an anonymized audio waveform from the modified frequency representation, where the third-party processing system is only allowed to perform speech processing on anonymized portions of the raw audio waveform; allowing the third-party processing system to copy elements of the anonymized audio waveform to improve a model employed by the third-party processing system to identify speech within audio waveforms; receiving a textual depiction of speech in the anonymized audio waveform from the third-party processing system; and performing a system operation based on the textual depiction.
1. A computer-implemented method comprising: receiving a raw audio waveform from a user device, where the raw audio waveform is recorded by the user device and contains speech data of a user; providing metadata and the raw audio waveform to a third-party processing system, where the metadata identifies one or more frequency components to be redacted from a frequency representation of the raw audio waveform; directing the third-party processing system to perform an operation on the raw audio waveform, wherein the operation includes: generating the frequency representation of the raw audio waveform, removing the one or more frequency components from the frequency representation that identify the user to produce a modified frequency representation, and generating an anonymized audio waveform from the modified frequency representation, where the third-party processing system is only allowed to perform speech processing on anonymized portions of the raw audio waveform; allowing the third-party processing system to copy elements of the anonymized audio waveform to improve a model employed by the third-party processing system to identify speech within audio waveforms; receiving a textual depiction of speech in the anonymized audio waveform from the third-party processing system; and performing a system operation based on the textual depiction. 5. The method of claim 1 , wherein the third-party processing system comprises a server.