Get help/Frequently Asked Questions/Sound

Why is there no sound on my Mac? Or why do I hear noise coming from my Mac's microphone?

Splashtop Personal
posted this on September 27, 2012 00:18

Please make sure Soundflower is installed on your Mac.  This may be the main reason why sound is not working properly.

  1. Normally, the Soundflower driver is installed with the Mac Streamer installation.  Verify that Soundflower is correctly installed.  

    Open System Preferences and select Sound as indicated in the red box below. 


    The "Input" and "Output" of the Sound settings should contain Soundflower (2ch) as shown below:

  2. Please make sure Input volume and Output volume are at maximum.  This may help if you still can't get sound.  (Some users told us that this was the reason why they were not getting sound on their tablet/phone.)


  3. For the versions of Splashtop Streamer for Mac before v2.2.0.1, please verify that the "Enable sound redirection" checkbox is enabled in the Settings tab of the Splashtop Streamer box as shown below.


For the versions of Splashtop Streamer for Mac since v2.2.0.1 or v2.2.0.2, please verify that the "Mute this computer" checkbox is enabled in the Settings tab of the Splashtop Streamer box as shown below.



For the versions of Splashtop Streamer for Mac since v2.3.0.4+,  please verify that the "Output sound only to mobile device" button is selected in the Settings tab of the Splashtop Streamer box as shown below.


After you have completed the steps above, you should be able to hear the desired audio on your tablet/phone instead of your Mac's microphone noises.

4.  Sometimes the Soundflower audio driver which Splashtop uses may develop unknown problems and cause sound issues on the Client side (no sound or very low volume).  Please try the following steps to see if there is any improvement.

a.  Uninstall the Mac Streamer.

b.  Uninstall Soundflower.

c.  Restart the computer.

d.  Re-install the Mac Streamer.  This will also install Soundflower again automatically.  It's better to restart the computer again.

Please see sections "A" and "B" below, for more detailed steps.

note.gif  NOTES:

  • If you want sound to be played on both your Mac and your tablet or phone, make sure the Enable sound redirection / Mute this computer (v2.2.0.1+) checkbox is enabled (checked) as shown above. 
  • Then in the options available on the "Soundflower Settings menu," make sure the Soundflower (2ch) property is set to Built-in Output (refer to Step 3), or select Built-in device in Step 2 Input/Output.
  • If you un-check the Enable sound redirection / Mute this computer (v2.2.0.1+)  option (refer to Step 4), and have not properly installed Soundflower (with "Internal microphone" selected in Sound/Input tab during the Splashtop session), then you may still hear the Mac's microphone noises on your tablet/phone.
  • In Mac Streamer v2.3.0.4 and later versions, there are two additional Sound options provided, as indicated in the illustration above.  You can choose to stream sound to the mobile device only, or to keep sound on the computer side only.


A).  How do I completely un-install the Mac Streamer?

1.  Click "Go" on the Tray menu (upper left) and select Downloads to open the Download folder.
2.  Double-click on the "Splashtop_Streamer_Mac_vx.x.x.x.dmg" file.  (The file name will vary depending on the version downloaded.)
3.  Double-click "Uninstall Splashtop Streamer."
4.  If a warning message appears, click "Open" in the message box.
5.  Input the user password to continue the Running if system requests it.
6.  Restart your Mac.
7.  Confirm that the Streamer is removed completely (the Splashtop Streamer icon no longer exists in the LaunchPad).


B).  How do I un-install Soundflower?

1.  Click "Go" on the Tray menu (upper left).

2.  Click the  "Go to Folders" item.
3.  Type "/System/Library/Extensions"
4.  Find the file "Soundflower.kext"
5.  Remove that file, and then re-start the Mac system.
6.  Open System Preferences -> Sound -> Output.
You should not see SoundFlower any more in the Output tab.




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Not getting any sound on my Galaxy S3 using the above settings for Splashtop 2 on Android.

May 13, 2013 16:09
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@Iped88 ,

We just had some updates on this article for the similar issue, please check step#4 in above article again for details.

May 13, 2013 19:05
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Hi Guys,

Trying to Stream Music from Digital performer Via Soundflower on a Mac to my iphone. I feel like it might be settings as I can hear itunes and youtube. Anything I can try?


August 18, 2013 12:55
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I found what I was looking for and thought I would post it here for others. I am not using Skype but the answers were contained within;

My setup:
DP 7.1

You Need:

1) Install Skype & Sowndflower.

2) In System Pref, set both System and Default Outs to 8Pre. 

3) Create Aggregate Device (SEE BELOW)  consisting of 8Pre and Soundflower 2ch(In this instance, I'll use 2ch version)

4) Launch Sowndflowerbed, I'm using the 2ch version in this example,so the 16ch version should be set to 'OFF'

5) Set 2ch SF to 'MOTU 8pre', then set both Channel 1&2 to 'NONE'

6) Keep SF launched, Launch DP, and choose Aggregate Device in Hardware Setup.

7) Let's make a very simple project; let's say you have one mono audio track of a narration which you have to replace a few lines here and there, while someone listen in to the session through Skype.

8) So, Create following tracks;
--one mono audio track, and import some mono audio
--a master fader track

9)Plug in a mic to an input on 8PRE, and choose that input on the mono track.

10)create a bus on the mono track.

11)set the bus destination to 'Sowndflower Output Stream1 5-6' (it's 5-6 because 8Pre only has main out 1&2 and headphone 1&2, 4 in total)

12) Launch Skype, go to Audio Pref, and set it to;
Output: 8PRE
Input: Soundflower(2ch)

13) Make Skype test call

14) Play back the mono audio track and check if it's recorded by Skype test call OK.

15) Make another test call, this time record something to the audio track with the mic, do the test call while you're recording.

16) check if it's recorded by Skype OK.

Voila--- :-)

Alternatively,you can 'collect' all audio you want to be sending to Skype via normal bus to one aux track before sending it to Skype, by assigning that aux track's output to 'Sowndflower Output Stream1 5-6'.

I also use cuemix to decide what the narrator hears in his cans, etc..

What do you mean by:

3) Create Aggregate Device consisting of 8Pre and Soundflower 2ch(In this instance, I'll use 2ch version)"

In Apple's Audio/MIDI Setup you can combine several audio interfaces/devices into one multi-faceted device. This accomplishes at least two major things; 1) it eliminates clocking issues between multiple devices, and 2) enables the use of many input/output devices in software that is only programmed to handle one device at a time. This was one of the wonders of OSX, and something the audio people at Apple rightfully were proud of. 

Somewhere along the line, something changed in Audio/MIDI Setup. There used to be a menu item for "Create Aggregate Device." Now it's the little + sign under the list of audio devices. 

August 18, 2013 13:55
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all that just to fix sound on a mac? I thought EVERYTHING on a mac was supposed be easy enough an old person could do it :P

September 09, 2013 18:03
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No update since last september????  Doesn't work for me using all latest versions. Sound worked fine on iPad 3 iOS 6. No sound on iOS 7.  No response from service request. Splashtop is ignoring this issue. 

March 14, 2014 08:36
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Sorry for the inconvenice. The case you mentioned is quite strange and your ticket has been replied. Sorry again for let you wait.

March 17, 2014 01:09