# 1216 meeting note
###### tags: `meeting note`

- problem of the current input/output format
- no velocity information
- no swing
- no onset (where a note begin) information, so repetition of the same pitch will be considered as a single note
- probable new input format for JAAH
- current chord (chromagram)
- chord root
- Time Signature
- speed estimation
- structural information (intro, chorus, solo...)(one hot encoding)
- key
- bar position
- beat position
- probable options for output formats
1. frame wise
- just like now
- output velocity prediction value
- output "is_onset" to seperate repeated notes
2. midi note
- output will be midi note information
- start time, end time
- pitch
- velocity
- input all input information, then it output midi notes, just like translation
- many-to-many RNN needed
- new cost function design needed
- could be hard to train
3. predict notes’ onset/offset time first, and then generate pitch, velocity of each note
- don’t know how to do now
- Problems
- JAAH doesn’t contain audio, I need to find and download it from other place
- Next
- try to collect the audios of JAAH
- design next input/output format clearly