Performance optimization and bug fixes

-- added ASR feature

Added denoising feature

Added real-time spectrum display feature, making it easier for users to better understand the sound frequencies.

16 band EQ added

- speech recognition feature added

- added real time display of audio classification feature

1. adaptive zoomed mode

1. add setting tiny sounds gain function

1, add EQ, PitchShift effect
2, enhance recording function

1. add hearing aid and megaphone option, when megaphone selected, The AEC (Acoustic Echo Canceller) algorithm will be activated to reduce echo and avoid howling. Because the megaphone generally needs an external high-volume Bluetooth speaker, the open sound field is easy to produce echo.

1. Remove the in-app rating function
2. Remove the function of recommending our other apps in the app

1. add AEC (Acoustic echo cancellation) function

1. iCloud support

1. improve some performance
2. enhance loud-speaker function

1. bugs fixed for iPhone 12

1. add folder for recordings

1. fix bug for exporting records

1. added  record function

1.  add max volume limiter function for Loud Sounds Protection.
2. providing up to 40 decibels (dB) of gain for the Boost function.