[hpsdr] TeamSpeak audio 2009/June/27 - compression

Nick Massey nrmonline at shaw.ca
Sun Jun 28 10:13:11 PDT 2009


I listen to the file most weeks and I had noticed that some things appeared 
to happen very quickly!

I appreciate Mike's effort to remove the dead air and encourage him to 
continue. Thanks Mike.

Nick, VA7NRM

----- Original Message ----- 
From: "Mike Naruta" <mnaruta at comcast.net>
To: "Richard Ames" <richard at ames.id.au>; "HPSDR (open)" 
<hpsdr at openhpsdr.org>
Sent: Sunday, June 28, 2009 8:57 AM
Subject: Re: [hpsdr] TeamSpeak audio 2009/June/27 - compression


> ***** High Performance Software Defined Radio Discussion List *****
>
>
> Yes, Richard, there is significant "compression" in
> the TeamSpeak sessions that I upload to HamSDR.  Let
> me describe the process.
>
> I remove long silent periods so that the "dead air"
> is about one second maximum between transmissions.
>
> I go through and increase the gain for the guys with
> low audio.  This is often 5 dB, sometimes 10 dB and
> 20 dB.
>
> If I have time, I go through again and remove:
>
> Uhhhs (where they are not slurred into adjacent words)
> Mouth smacks
> "Can you hear me now?" transmissions
> Repeating back of the last person's transmission ("Fine Business on...")
> Current weather reports
> Current sports scores
> Temporal events ("I'll be flying in Monday, meet you Tuesday")
> Topics not related to SDR or ham radio
>
> I consider my hours of editing my value-added
> contribution to the HPSDR project.
>
> For example, the June 27th recording was 86 minutes
> from the start of the session until Bill and Phil
> signed off.
>
> The TeamSpeak file that I uploaded to HamSDR was
> slightly less than 58 minutes, approximately 67%
> of the original, yielding a reduction in file size,
> download time, and is about 28 minutes shorter
> than the recording.
>
> The June 20th file shows 78 downloads.  So,
> projecting, that would be a saving of 36.4 hours
> of listening time.  I'm willing to trade my hours
> of editing time to save the group almost a
> work-week of listening time.
>
> Here is a question for those who listen to the
> file from HamSDR:  would you rather have the
> original recording, or the edited version?
>
>
> Mike - AA8K
>
>
>
> Richard Ames wrote:
>> Mike -
>>
>> It appears there is some time compression in the recording of the
>> Teamspeak sessions....  yesterday I used the 'wall clock' to note the
>> times. Please see:
>>
>> http://openhpsdr.org/wiki/index.php?title=Teamspeak_index_2009#27_June
>>
>> I looks like it is 15% - 20% shorter (real time was about 70 minutes and
>> the recorded version shows 58).
>>
>> This makes my note of the timing a bit less useful - do you have any
>> control over this????
>>
>> Regards,
>>
>> Richard.
>>
>>
>> On Sat, 2009-06-27 at 10:15 -0400, Mike Naruta wrote:
>>> ***** High Performance Software Defined Radio Discussion List *****
>>>
>>>
>>> The 27/June TeamSpeak zipped mp3 (59 minutes)
>>> plus a text file of channel sent comments,
>>> is available at:
>>>
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