我一直在网上查找有关使用python脚本控制树莓派（b +）音量的任何参考。我想出了this thread previously asked，但是python-alsaaudio不适用于python 3或在thonny python idle中说。 因此，我需要了解根据用户输入更改pi音量的任何正确方法。
答案 0 :(得分：0)
另一种方法是通过命令行工具控制音量。 Alsa命令行有一个名为using Microsoft.Extensions.Caching.Memory;
using SharpRepository.Repository;
using SharpRepository.XmlRepository;
using SharpRepository.Repository.Caching;
using SharpRepository.EfRepository;
public class MyEntity
{
public DateTime EventDateTime;
public Dictionary<string, string> attributes = new Dictionary<string, string>();
}
static void Main(string[] args)
{
MemoryCache memoryCache = new MemoryCache(new MemoryCacheOptions());
InMemoryCachingProvider inMemoryCachingProvider = new InMemoryCachingProvider(memoryCache);
IRepository<MyEntity> myRepo = new XmlRepository<MyEntity>(@"C:\temp\MyLocalRepo", new StandardCachingStrategy<MyEntity>(inMemoryCachingProvider));
// When I am ready to further develop the data layer, I can swap the repo out for a different one
//IRepository<MyEntity> myRepo = new EfRepository<MyEntity>(new System.Data.Entity.DbContext("myConnectionString"));
// And my logic that interacts with the repository will still work
myRepo.Add(new MyEntity { EventDateTime = new DateTime(2019, 06, 16), attributes = new Dictionary<string, string> { { "WithAttrbutes", "AndTheirValues" } } });
}
的工具：
amixer现在，您可以创建一个运行上述命令的简单python脚本：
amixer sset Master 50%
您可以将import subprocess
# a value between 0 and 100
volume = 50
command = ["amixer", "sset", "Master", "{}%".format(volume)]
subprocess.Popen(command)
更改为其他声卡。您可以获取控件列表：
Master