Recording and reproducing device, recording and reproducing method, and vehicle-mounted recording and reproducing device

A recording and reproducing device comprising:

• a single reading unit that reads sound signals recorded in a single recording medium, the sound signals including a first set of signals and a second set of signals which are different from and subsequent to the first set of signals;
• a buffer unit that temporarily stores the sound signals which are read by the single reading unit;
• a recording unit that records the sound signals which are temporarily stored in the buffer unit, the recording unit being different from the single recording medium;
• a reproducing unit that reproduces the sound signals which are recorded in the recording unit;
• and
• a controller that automatically changes a reading speed of the single reading unit between a first reading speed and a second reading speed which is faster than the first reading speed,
• wherein the controller automatically changes the reading speed of the single reading unit depending on whether the single reading unit reads the first set of signals or the second set of signals from the single recording medium such that the single reading unit reads the first set of signals at the first reading speed and reads the second set of signals at the second reading speed after reading the first set of signals.