+ wishlist Add to Cart The item has been added Author: Ian Pitt Alistair Edwards Design of Speech-based Devices: A Practical Guide (Practitioner Series) [9781852334369] Buy More - Save More. Below are the available bulk discount rates for each individual item when you purchase a certain amount Quantity Price Savings 25 - 49 12% 50 - 99 13% 100+ 14% List Price As Low as $54.99 Format: Hardcover