I followed the directions on ohnosec for using audacity for recording audio files. I use them as tail messages and that works fine. The audio quality however is eh so-so and I feel it could be better. I know one thing the normalize feature called for -6 and I ended up bumping it to 0 db just so it could be more audible. Is there anyone willing to share their experiences? It seems from listening to traffic on allstar the quality of messages could be better. N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086, 42658 N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086, 42658
The audio quality over a 5kc bandwidth-limited repeater at an 8 kc sampling rate is never going to sound like a broadcast FM station (most of them sound like crap anyway), especially if you are using a pc microphone on a $20 headset you'd use for skype or echolink. You have to start with high quality audio and downsample; going the other way isn't going to get you what you want. The Allison files included with the release are only 8kc samples. And they sound fine. As does William, etc. if you've paid the license fee to cepstral. So, what are you looking for? Loudness or clarity? Loudness you can fix with Audacity; clarity (or fidelity) can't be created in an 8kc sample rate unless it was there to begin with; IOW you can't put in what wasn't there from the start, and current PC-grade mics are not the way to go, neither is starting from mp3 files or other lossy codecs. Maybe I'm lucky in that I have a recording studio and pro audio equipment at my disposal, as well as contacts with pro radio and TV voice artists...but I've heard great amateur announcements done with simple mixers and a decent Heil or Electro Voice mic, recorded into a wav file, edited, then downsampled to work in Allstar as per the directions in the archive. But, the beginning HAS to start with the best quality and go down from there, not start with low quality and try and go up. -- Bryan Sent from my iPhone 6S...No electrons were harmed in the sending of this message.
On Jan 18, 2016, at 10:16, Robert Newberry <N1XBM@amsat.org> wrote:
I followed the directions on ohnosec for using audacity for recording audio files. I use them as tail messages and that works fine. The audio quality however is eh so-so and I feel it could be better. I know one thing the normalize feature called for -6 and I ended up bumping it to 0 db just so it could be more audible.
Is there anyone willing to share their experiences? It seems from listening to traffic on allstar the quality of messages could be better.
N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086, 42658
N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086, 42658
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Byran, To answer your question I want loudness and clarity. I think I know how to fix loudness since that was the first problem I noticed with my first recording. If I read your email right maybe I am approaching this wrong because I am recording at 8000hz 16 bit. Maybe I should be recording at a higher bit and sample rate and then go from there? I have a half way decent headset to use with my flex radio for remote operations. I guess I misunderstood those directions I found on ohnosec. You can hear the announcements it's just that it sounds muddy and you have to focus on what is being said. I think getting more clarity will fix the problem. N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086, 42658
I find that boosting the high and mids before converting it to 8khz really helps with clarity Kd0whb
On Jan 18, 2016, at 09:13, Robert Newberry <N1XBM@amsat.org> wrote:
Byran,
To answer your question I want loudness and clarity. I think I know how to fix loudness since that was the first problem I noticed with my first recording.
If I read your email right maybe I am approaching this wrong because I am recording at 8000hz 16 bit. Maybe I should be recording at a higher bit and sample rate and then go from there? I have a half way decent headset to use with my flex radio for remote operations.
I guess I misunderstood those directions I found on ohnosec. You can hear the announcements it's just that it sounds muddy and you have to focus on what is being said. I think getting more clarity will fix the problem.
N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086, 42658
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I can only suggest for the way most of you create messages, That you start with a high quality recording i.e. high bandwidth on a full flavored format recording. Convert to formats of your systems capability and desire from there. If you start with a low quality format recording and convert it to anything, you will never like the result. ...mike/kb8jnm
Byran,
To answer your question I want loudness and clarity. I think I know how to fix loudness since that was the first problem I noticed with my first recording.
If I read your email right maybe I am approaching this wrong because I am recording at 8000hz 16 bit. Maybe I should be recording at a higher bit and sample rate and then go from there? I have a half way decent headset to use with my flex radio for remote operations.
I guess I misunderstood those directions I found on ohnosec. You can hear the announcements it's just that it sounds muddy and you have to focus on what is being said. I think getting more clarity will fix the problem.
N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086, 42658 _______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
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participants (4)
-
Bryan D. Boyle -
mike＠midnighteng.com -
Robert Newberry -
Skyler Fennell