Preheat oven to 350 degrees. Cream butter and shortening together with an electric mixer; gradually add sugar, beating well at medium speed. Add eggs, one at a time, beating after each addition.

Dissolve baking soda in buttermilk. Combine flour and salt; add to creamed mixture alternately with buttermilk mixture, beginning and ending with flour mixture, mixing just until blended after each addition. Stir in vanilla and almond extracts.

Pour batter into a greased and floured 12-cup Bundt pan. Bake for 1 hour, or until toothpick inserted into center of cake comes out clean. Cool in pan 10-15 minutes; remove from pan, and let cool completely on wire rack.