为啥降噪后的语音能量比原始语音还大
bailiangze opened this issue · 4 comments
bailiangze commented
bailiangze commented
上面是降噪后的语音，后面是纯净语音，我直接用的源代码跑出来，为啥能量增大了
qiuqiangkong commented
您好，原因是stft变换后，反变换时需要乘以一个系数，这个系数和np.hamming窗有关，我们没有深入研究。
Best wishes,
Qiuqiang
…________________________________
From: bailiangze <notifications@github.com>
Sent: 13 March 2019 07:45
To: yongxuUSTC/sednn
Cc: Subscribed
Subject: Re: [yongxuUSTC/sednn] 为啥降噪后的语音能量比原始语音还大 (#28)
上面是降噪后的语音，后面是纯净语音，我直接用的源代码跑出来，为啥能量增大了
―
You are receiving this because you are subscribed to this thread.
Reply to this email directly, view it on GitHub<https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FyongxuUSTC%2Fsednn%2Fissues%2F28%23issuecomment-472314338&data=02%7C01%7Cq.kong%40surrey.ac.uk%7Ceb2842ab507049f5043c08d6a787d76c%7C6b902693107440aa9e21d89446a2ebb5%7C0%7C1%7C636880599203234760&sdata=ETQU6%2BM%2FrETQQlh397Tu83bqz%2FSSGDiEzNMcKxdCuWI%3D&reserved=0>, or mute the thread<https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fnotifications%2Funsubscribe-auth%2FAMt5ydZw9mgC0X0Y5XiljY4rP2O8vNHnks5vWKyOgaJpZM4bsliS&data=02%7C01%7Cq.kong%40surrey.ac.uk%7Ceb2842ab507049f5043c08d6a787d76c%7C6b902693107440aa9e21d89446a2ebb5%7C0%7C1%7C636880599203234760&sdata=SZDnEqURmFnosshoYyGAODkjrVFo2lrjY9JQwk2Il%2BU%3D&reserved=0>.
bailiangze commented
.........................这个就尴尬了。。。我发现如果在层加上了正则化之后，能量就正常了，但是效果不好了
qiuqiangkong commented
可以检查还原后的音频是否介于[-1, 1]之间，如果超过了这个范围会导致削顶失真。另外PESQ评价指标对幅度变化不敏感。
Best wishes,
Qiuqiang
…________________________________
From: bailiangze <notifications@github.com>
Sent: 15 March 2019 09:09
To: yongxuUSTC/sednn
Cc: Kong, Qiuqiang (PG/R - Elec Electronic Eng); Comment
Subject: Re: [yongxuUSTC/sednn] 为啥降噪后的语音能量比原始语音还大 (#28)
.........................这个就尴尬了。。。我发现如果在层加上了正则化之后，能量就正常了，但是效果不好了
―
You are receiving this because you commented.
Reply to this email directly, view it on GitHub<https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FyongxuUSTC%2Fsednn%2Fissues%2F28%23issuecomment-473210967&data=02%7C01%7Cq.kong%40surrey.ac.uk%7C81e7b23b779140c68f5708d6a925f2dd%7C6b902693107440aa9e21d89446a2ebb5%7C0%7C0%7C636882377786446288&sdata=4yzrudwUGkxvwHYHH0NGk3sZ1Btxqw45T7sPxzR9teY%3D&reserved=0>, or mute the thread<https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fnotifications%2Funsubscribe-auth%2FAMt5ySx4ZaLqj6RsSEl4iXEwFS94niyqks5vW2NQgaJpZM4bsliS&data=02%7C01%7Cq.kong%40surrey.ac.uk%7C81e7b23b779140c68f5708d6a925f2dd%7C6b902693107440aa9e21d89446a2ebb5%7C0%7C0%7C636882377786446288&sdata=KTGAKGeB6jPcY0teteBi3DthqHQPgmPJFUgasfyLXWA%3D&reserved=0>.