I want to build a toy. The initial build will be a prototype but if the idea 'sells,' I want to build en-masse.
For the prototype, as I do not have (beyond what I learnt at Uni) industry experience, I want to make use of freelancers for designing and programming the board.
The toy basically will play sounds based on which button is pressed. The sounds are recorded sound/music. I am currently working with a freelancer who is designing a PCB for this but we are stuck on how to store the sounds. At the moment, SD card is the recommendation but I know that this is not an option due to cost (if one is producing en-masse.)
Can someone please recommend a possible solution? The freelancer has also mentioned possibility of using a semiconductor memory but says that the programming for this will be difficult. Are there other options?