LAME Flashcards

1
Q

What does LAME stand for?

A

LAME Ain’t An MP3 Encoder

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2
Q

What is the primary function of LAME?

A

Converts a suitable lossless input audio file to an MP3 file

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3
Q

What types of bitrates can LAME output for MP3 files?

A

Constant, variable, or average bitrate

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4
Q

Why is LAME recommended as an MP3 encoder?

A

It is open source, customizable, and outputs high quality MP3 files

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5
Q

What is Constant Bitrate (CBR)?

A

The user chooses a preset bitrate, and LAME targets that bitrate throughout the entire file

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6
Q

What happens to the bitrate in a CBR file?

A

Every second in the file has the same number of bits

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7
Q

What is the effect of using CBR on file size?

A

CBR files are larger than VBR and ABR files of the same quality

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8
Q

List valid LAME constant bitrates.

A
  • 8
  • 16
  • 24
  • 32
  • 40
  • 48
  • 64
  • 80
  • 96
  • 112
  • 128
  • 160
  • 192
  • 224
  • 256
  • 320 kbit/s
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9
Q

What is the most popular CBR bitrate on RED?

A

320 kbit/s

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10
Q

What is the lowest quality LAME CBR bitrate allowed on RED for music torrents?

A

192 kbit/s

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11
Q

What is Variable Bitrate (VBR)?

A

The user chooses a preset quality, and LAME targets that quality, letting the bitrate vary

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12
Q

What determines the number of bits in a VBR file?

A

The complexity of the sound at that second

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13
Q

What is the bitrate range for a VBR file?

A

0 to 320 kbps

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14
Q

What factors influence the filesize of a VBR encode?

A
  • The preset selected
  • The audio data being encoded
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15
Q

What do VBR presets range from?

A

V0 (highest quality) to V9 (lowest quality)

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16
Q

What is the most popular VBR preset on RED?

A

V0

17
Q

What is the typical bitrate range for V0?

A

Between 230 and 270 kbps

18
Q

What is the lowest quality LAME VBR preset allowed on RED?

A

V2

19
Q

What is the typical bitrate range for V2?

A

Between 180 and 210 kbps

20
Q

What is Average Bitrate (ABR)?

A

The user chooses a preset bitrate, and LAME allows the bitrate to vary, but the average is preset

21
Q

What is one advantage of ABR?

A

File size is predictable

22
Q

What is a disadvantage of using ABR?

A

It performs poorly as a mix of CBR and VBR

23
Q

True or False: CBR files have predictable file sizes.

A

True

24
Q

True or False: VBR files have predictable file sizes.

A

False