Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1863 1864 - 1934 1935 - 1946 1947 - 1981 1982 - 2000 muffled sound English
1800 - 1938 1939 - 1949 1950 - 1953 1954 - 1996 1997 - 2000 fuzzy sound English

Run your own experiment! Raw data is available for download here.
© 2013 Google - Privacy & Terms - About Google - About Google Books - About Ngram Viewer