old_contents: from .utils import (
      db_to_float,
      ratio_to_db,
      register_pydub_effect,
      make_chunks,
  )
  from .exceptions import TooManyMissingFrames
  
  @register_pydub_effect
  def normalize(seg, headroom=0.1):
      """
      headroom is how close to the maximum volume to boost the signal up to (specified in dB)
      """
      peak_sample_val = seg.max
      target_peak = seg.max_possible_amplitude * db_to_float(-headroom)
  
      needed_boost = ratio_to_db(target_peak / peak_sample_val)
      return seg.apply_gain(needed_boost)
      
  @register_pydub_effect
  def speedup(seg, playback_speed=1.5, chunk_size=150, crossfade=25):
      # we will keep audio in 150ms chunks since one waveform at 20Hz is 50ms long 
      # (20 Hz is the lowest frequency audible to humans)
      
      # portion of AUDIO TO KEEP. if playback speed is 1.25 we keep 80% (0.8) and
      # discard 20% (0.2)
      atk = 1.0 / playback_speed
      
      if playback_speed < 2.0:    
          # throwing out more than half the audio - keep 50ms chunks
          ms_to_remove_per_chunk = int(chunk_size * (1 - atk) / atk)
      else:
          # throwing out less than half the audio - throw out 50ms chunks
          ms_to_remove_per_chunk = int(chunk_size)
          chunk_size = int(atk * chunk_size / (1 - atk))
      
      # the crossfade cannot be longer than the amound of audio we're removing
      crossfade = min(crossfade, ms_to_remove_per_chunk-1)
          
      print("chunk: {}, rm: {}".format(chunk_size, ms_to_remove_per_chunk))
      
      chunks = make_chunks(seg, chunk_size + ms_to_remove_per_chunk)
      if len(chunks) < 2:
          raise Exception("Could not speed up AudioSegment, it was too short {2:0.2f}s for the current settings:\n{0}ms chunks at {1:0.1f}x speedup".format(chunk_size, playback_speed, seg.duration_seconds))
      
      # we'll actually truncate a bit less than we calculated to make up for the
      # crossfade between chunks
      ms_to_remove_per_chunk -= crossfade
  
      # we don't want to truncate the last chunk since it is not guaranteed to be
      # the full chunk length
      last_chunk = chunks[-1]
      chunks = [chunk[:-ms_to_remove_per_chunk] for chunk in chunks[:-1]]
      
      out = chunks[0]
      for chunk in chunks[1:]:
          out = out.append(chunk, crossfade=crossfade)
          
      out += last_chunk
      return out
      
  
new_contents: from .utils import (
      db_to_float,
      ratio_to_db,
      register_pydub_effect,
      make_chunks,
  )
  from .exceptions import TooManyMissingFrames
  
  @register_pydub_effect
  def normalize(seg, headroom=0.1):
      """
      headroom is how close to the maximum volume to boost the signal up to (specified in dB)
      """
      peak_sample_val = seg.max
      target_peak = seg.max_possible_amplitude * db_to_float(-headroom)
  
      needed_boost = ratio_to_db(target_peak / peak_sample_val)
      return seg.apply_gain(needed_boost)
      
  @register_pydub_effect
  def speedup(seg, playback_speed=1.5, chunk_size=150, crossfade=25):
      # we will keep audio in 150ms chunks since one waveform at 20Hz is 50ms long 
      # (20 Hz is the lowest frequency audible to humans)
      
      # portion of AUDIO TO KEEP. if playback speed is 1.25 we keep 80% (0.8) and
      # discard 20% (0.2)
      atk = 1.0 / playback_speed
      
      if playback_speed < 2.0:    
          # throwing out more than half the audio - keep 50ms chunks
          ms_to_remove_per_chunk = int(chunk_size * (1 - atk) / atk)
      else:
          # throwing out less than half the audio - throw out 50ms chunks
          ms_to_remove_per_chunk = int(chunk_size)
          chunk_size = int(atk * chunk_size / (1 - atk))
      
      # the crossfade cannot be longer than the amount of audio we're removing
      crossfade = min(crossfade, ms_to_remove_per_chunk-1)
          
      print("chunk: {}, rm: {}".format(chunk_size, ms_to_remove_per_chunk))
      
      chunks = make_chunks(seg, chunk_size + ms_to_remove_per_chunk)
      if len(chunks) < 2:
          raise Exception("Could not speed up AudioSegment, it was too short {2:0.2f}s for the current settings:\n{0}ms chunks at {1:0.1f}x speedup".format(chunk_size, playback_speed, seg.duration_seconds))
      
      # we'll actually truncate a bit less than we calculated to make up for the
      # crossfade between chunks
      ms_to_remove_per_chunk -= crossfade
  
      # we don't want to truncate the last chunk since it is not guaranteed to be
      # the full chunk length
      last_chunk = chunks[-1]
      chunks = [chunk[:-ms_to_remove_per_chunk] for chunk in chunks[:-1]]
      
      out = chunks[0]
      for chunk in chunks[1:]:
          out = out.append(chunk, crossfade=crossfade)
          
      out += last_chunk
      return out
      
  
subject: fix typo