Noise during recording

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venticello
Posts: 3
Joined: Sun Aug 27, 2017 8:38 am
Operating System: OS X 10.11 El Capitan or later (macOS)

Noise during recording

Post by venticello » Tue Aug 29, 2017 2:53 pm

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Hello,
I am on mac os sierra 10.12.6, I use audacity version 2.1.0 installed since the disk dmg.
I can not record my voice as in the past with an external microphone; For some time while playing my recordings I hear my voice well but accompanied by a background noise a kind of sizzling very important while before the recorded recordings did not generate any noise or breath, it was really perfect and Of course always with the same microphone.
Below is a screenshot of the waveform that appears during recordings and is also displayed when the microphone is closed.
cordially

kozikowski
Forum Staff
Posts: 40740
Joined: Thu Aug 02, 2007 5:57 pm
Operating System: OS X 10.9 Mavericks
Location: Los Angeles

Re: Noise during recording

Post by kozikowski » Wed Aug 30, 2017 2:12 am

What is the machine and microphone? How are they connected?

Koz

venticello
Posts: 3
Joined: Sun Aug 27, 2017 8:38 am
Operating System: OS X 10.11 El Capitan or later (macOS)

Re: Noise during recording

Post by venticello » Wed Aug 30, 2017 9:49 am

Hello,
My computer is a mac pro released in 2012 with mac os 10.12.6 and my version of audacityest 2.1.3.
I have the same problem on a mac pro 2007 model with audacity 2.1.1.
Thank you for your reply.

steve
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Re: Noise during recording

Post by steve » Wed Aug 30, 2017 10:40 am

kozikowski wrote:and microphone?
kozikowski wrote:How are they connected?
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

venticello
Posts: 3
Joined: Sun Aug 27, 2017 8:38 am
Operating System: OS X 10.11 El Capitan or later (macOS)

Re: Noise during recording

Post by venticello » Wed Aug 30, 2017 5:04 pm

The microphone I use and a JB27 with the following features: Micro JB27 JB Systems
Professional Microphone
Very pure sound quality
Very good sensitivity
XLR Connector
Sold with Case, microphone clamp and 6m XLR cable / mono jack
Type: cardioid dynamic
Polarity: unidirectional
Frequency Response: 50 Hz - 18 kHz
It is connected to the computer at the input port of the mac pro.

cyrano
Posts: 1304
Joined: Fri Apr 17, 2015 11:54 pm
Operating System: OS X 10.9 Mavericks

Re: Noise during recording

Post by cyrano » Wed Aug 30, 2017 8:26 pm

That's a dynamic mic on a line-level input?

The level is too low, so your mic connection picks up a lot of noise. You need a simple mic preamp.

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