Music transcription

Abstract

Methods, systems, and devices are described for automatically converting audio input signal data into musical score representation data. Embodiments of the invention identify a change in frequency information from the audio signal that exceeds a first threshold value; identify a change in amplitude information from the audio signal that exceeds a second threshold value; and generate a note onset event, each note onset event representing a time location in the audio signal of at least one of an identified change in the frequency information that exceeds the first threshold value or an identified change in the amplitude information that exceeds the second threshold value. The generation of note onset events and other information from the audio input signal may be used to extract note pitch,note value, tempo, meter, key, instrumentation, and other score representation information.

Description

technical field [0001] This application claims priority to co-pending U.S. Provisional Patent Application No. 60 / 887,738, filed February 1, 2007, entitled "MUSICTRANSCRIPTION" (Attorney Docket No. 026287-000200US), which is hereby incorporated by reference , as fully set forth for all purposes in this document. Background technique [0002] The present invention relates generally to audio applications, and more particularly to audio decomposition and score generation. [0003] It may be desirable to provide accurate real-time conversion of raw audio input signals to score data for transcription. For example, a musical performer (eg, live or recorded using vocals and / or other instruments) may wish to automatically transcribe a performance to produce a sheet music score or to convert the performance into an editable digital score file. Many elements can be part of a musical performance, including notes, timbre, mode, dynamics, rhythm, and track. A performer may require that...

AI Technical Summary

Problems solved by technology

A resulting limitation is that it may be time-consuming or undesirable to provide the system with data rather than the raw audio signal

Another resulting limitation is that the user may not know much about the data the system needs (for example, the user may not be familiar with music theory)

Yet another resulting limitation is that the system may have to provide extensive user interface capabilities to allow required data to be provided to the system (e.g., the system may have to have a keyboard, display, etc.)

Images