Regular Expressions 101

^start of line

Maximum amplitude:the literal text Maximum amplitude: (case sensitive)

\s*any whitespace character, repeated any number of times

Group amp(?P<amp>-?\d\.\d+)

-?optionally matches the literal - (45₁₀ / 55₈ / 2D₁₆)

\da digit

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\na line-feed (newline) character (ASCII 10)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

^Maximum amplitude:\s*(?P<amp>-?\d\.\d+)\n

New

Samples read:           6615000
Length (seconds):     75.000000
Scaled by:         2147483647.0
Maximum amplitude:     0.712219
Minimum amplitude:    -0.805969
Midline amplitude:    -0.046875
Mean    norm:          0.009264
Mean    amplitude:    -0.000027
RMS     amplitude:     0.043011
Maximum delta:         0.734100
Minimum delta:         0.000000
Mean    delta:         0.008353
RMS     delta:         0.041470
Rough   frequency:         6767
Volume adjustment:        1.241