Learn tips to instantly eliminate feedback, practice mixing and EQ with a multi-track digital mixer, learn about frequencies, follow a comprehensive soundcheck checklist, and get access to more free tools to help you get better results with your sound system. There is even a free frequency analyzer and SPL meter included.
The Great Church Sound mobile app is the perfect interactive companion to the book "Great Church Sound - a guide for the volunteer".
Fixed issue when microphone permission not granted for audio analyzer. Updated engine for some cases where app would not run on launch.
9Apps 4.9
![국세청 홈택스 [손택스] on 9Apps](https://go.getnew.app/sg/res/jpg/f7/df/69cc2f90120ec331db2630e0f5b6-6dh.jpg?x-oss-process=style/jmq200)
