I've used 2 techniques when learning Japanese. However, keep in mind that there are very few sounds in Japanese that aren't in English, so my experience has be

I've used 2 techniques when learning Japanese. However, keep in mind that there are very few sounds in Japanese that aren't in English, so my experience has been relatively easy. When I say 2 techniques, it's actually just one: shadowing. Essentially you take a recording of a piece of speech and memorise it. You then practice saying it at the same time as the recording. When you feel like you are able to say it, play the recording in headphones and record your voice. Then compare your recording to the original recording. I used news casts to practice because it was easier to find audio clips that also had transcripts I could read -- however an audio book would be ideal if you can get your hands on it. I ran into a problem just having facility with the succession of sounds, timing and tones. My "second" technique was to do this with music. I memorised a variety of popular music and then went to karaoke 3 times a week :-) Probably this helped me the most. I still struggle quite a bit with tones. Japanese does not have accents on words, but it has 2 tones -- either rising or falling. Getting the tones right is often the difference between being understood or not. At first I could not hear the tones but practicing example sentences that used homonyms with different tones helped me quite a bit. As I said, I never really had to struggle with learning how to pronounce a sounds -- it was much more in selecting the correct sound, or refraining from using English dipthongs, etc. However, I've taught English to Japanese students who have real difficulty learning how to make certain sounds. I have found that being very specific about how the mouth moves, where you put your tongue, how to use your breath, etc makes all the difference. Probably the best reference are textbooks meant for people who were deaf from birth. After that it's just practice and shadowing is the best technique I know about.