Sony ICD-PX440 Help Manual page 247

Help Guide
Troubleshooting
IC Recorder
ICD-PX440
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Noise is heard in the playback even though the noise cut function is active.
When playing back files using the built-in speaker, the noise cut function does not work.
When the noise cut function is set to "Auto," the IC recorder adjusts the noise cut level automatically, however, when
you play a file recorded with the "Scene Select" menu set to "Meeting," "Lecture," "Voice Notes," or "Interview," the
noise cut function will switch to "Medium" automatically.
Notes on use
4-534-070-11(1)
Copyright 2014 Sony Corporation
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