Eu já sei como aumentar o volume acima de 100% de largura do sistema, mas quero fazer isso por apenas uma aplicação (que é sempre muito tranquila, quero virar). Esta é a página da minha configuração para o som.
I already know how to increase volume above 100% system wide, but I want to do this for only one application (which is always very quiet, I want to turn it up). This is my settings page for sound.
Open the application you want to set with high volume.
Then go to Settings-->Sound (the very same page you show above) and select the tab
Applications. Only applications that have recently played sounds will show up. Select your desired volume and enjoy.
I could not find any way to over-amplify an application, so this has a similar effect. Go to Settings/Sound/Over-amplification, toggle on, and turn up the system volume. Then, open the Applications tab (in Settings/Sound) and turn down the volume for every other application. Not a perfect solution (you need to do this for every application) or what I was looking for, but it works.