M-Audio DMAN [9/52] Digital recording dos and don ts
9
design practices as in the DMAN, the only way to make a noisy
digital recording is to add the noise yourself!
Digital Recording Dos and Don’ts
Meters are not meant to ever go into the red. Digital recording is
very unforgiving of clipping. Unlike analog systems, where tape
saturation gives a nice smooth compression, digital distortion
sounds like someone is breaking a pane of glass in your ear.
Make sure that you give yourself lots of headroom both when
recording and mixing. You’ve got all that dynamic range -- use it.
Measure twice, cut once. With most hard disk recording
software, like the version of Samplitude that is bundled with the
DMAN Digital Studio, you will be doing your mixing in the
program. Because you won’t be able to run each track to
outboard gear (effects, compression, etc.) when mixing, you want
each track to sound right when you record it. Take your time to
make sure that mic position, EQ, and effects settings are exactly
what you want when tracking. “Fix it in the mix.” hardly ever
works, anyway.
Know your signal chain. Some programs set the levels
internally, others use the Windows level controls. Make sure you
know which is which. If you are not getting the levels you
expect, retrace your signal chain and make sure that you are
adjusting levels in the correct places.
Plan ahead. Think about tracking ahead of time and decide in
what order you are going to record the tracks. Keep a track list.
Use it to make notes when you are recording (where you might
need to punch in and out, etc.). With hard disk recording you
don’t have to worry about the bass track bleeding into the vocal
track or whether the heads have the same response on different
tracks, but you still want to have a plan.
Back up your work. Sure, most editing functions with HDR
systems are non-destructive, but some are not. If you are doing a
lot of editing, (or even if you’re not, but don’t want to take any
chances) back up your audio tracks. Audio takes up a lot of disk
space, so you might want to have a large format removable drive
(Iomega Zip or Jaz, Syquest EZ Flyer for example) on which to
store audio files.
Optimize your disk often. Fragmented audio files can cause
problems.
Содержание
- Contents 1
- Fcc class b european ce compliance 3
- Fcc id imjdman 3
- Introduction 4
- What s in the box 4
- About the dman 5
- Quick start guide 5
- Digital audio features of dman 6
- About plug and play 7
- The solution 7
- About digital recording 8
- Pnp theory of operation 8
- Digital recording dos and don ts 9
- Dman connection 10
- Dman connections 12
- Hardware installation 12
- Daughterboard installation optional 14
- Driver and utilities installation 15
- Please follow these step 15
- Windows 3 x software 15
- Audio setup for non pnp computers 19
- Windows 3 x driver control panel 19
- Audio setup for computers with pnp 20
- Midi mpu401 setup 21
- Audio input control panel 22
- Windows 3 x utility applications 22
- Audio mixer control panel 24
- The audio transport 26
- Defining a new audio file 28
- The user defined audio transport button 29
- Sound check application 30
- Driver installation 31
- Windows 95 software 31
- Windows 95 driver configuration 32
- Windows 95 mixer wss mixer 33
- Click the recording button with the left mouse button to bring up the recording mixer shown are the devices that are allowed as inputs to the recording mixer again unchecking a specific box will eliminate that device from the input mixer window known as the wave input window the wave input window is accessed when the ok button is clicked 35
- Windows sound recorder 36
- Dman diagnostics utility 38
- Dos software utilities 38
- Dman dos mixer utility 39
- Dman with 3rd party applications 41
- Audio formats 42
- Disk space per minute 42
- Disk space requirements for typical recording formats 42
- Dman supports recording and playback in many audio formats when selecting an audio format you are usually trading off sound quality versus the amount of disk space the recorded audio will consume in general sound quality increases as the sample rate increases as the number of bits used increases as stereo is used instead of mono and when the audio is not compressed i e its format is pcm not adpcm or a law sample rate is the parameter most directly related to frequency response and should be chosen carefully unless you have unlimited disk space available choose a sample rate that is at least twice the frequency this is called the nyquist value of the highest audio frequencies you want to record for example if your source material has a frequency range of 30 hz to 10 khz you can record at a sample rate of 22 khz increasing to 44 khz is unlikely to improve the audio quality and it will take twice as much disk space to store the file below is a table of commonly used audio formats and the 42
- Format 42
- Hard disk space requirements for typical audio formats 42
- Sample 42
- Typical use 42
- Interrupt ibm pc assigns this interrupt to 43
- This section addresses potential problems that can occur in all operating system environments with emphasis on hardware troubleshooting within the pc environment there is a limited number of hardware resources addresses irqs and dma channels available for use since audio cards require many resources most audio card installation problems arise from improperly set irq and dma values the tables below list the irq and dma channel assignments normally used in the pc environment when you experience problems that indicate a resource conflict you can compare the irq and dma channels shown in the tables below with your current parameters as listed in the configuration screen 43
- Troubleshooting 43
- Typical irq assignments 43
- Channel 44
- Ibm pc assigns this channel to 44
- Typical dma assignments 44
- Dos troubleshooting 45
- Windows 3 x troubleshooting 47
- Windows 95 troubleshooting 49
- Appendix technical specs 51
- Board configuration 51
- Channel volume controls 51
- External audio inputs 51
- External audio outputs 51
- Limited lifetime warranty 52
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