Question about bit rate

[a897456]

"each quantizer uses a codebook of size N = 2r/Nq = 280/8 = 1024"
but i find each quantizer uses a codebook is 1024x512, so N=1024x512? and 8x10x9=720bit, not 80bit?

[JoyceMind]

"each quantizer uses a codebook of size N = 2r/Nq = 280/8 = 1024" but i find each quantizer uses a codebook is 1024x512, so N=1024x512? and 8x10x9=720bit, not 80bit?

do you have wechat id or other social media,i want to discuss this question with you detailedly.Because I've been thinking about it for a long time.